This page contains unnamed numbers with two or more unrelated facts.

## Edit

### 3 digits Edit

The number **121** is the fourth largest undulating square number; this has been proved by David Moews.

According to the Redmond–Sun conjecture, the numbers **121** and 125 are the seventh largest perfect powers not separated by a prime.

In the association football Chilean Primera División, there are 16 teams playing a single round-robin tournament followed by a two-legged runners-up playoff, resulting in **122** matches.

Since 4×(2×8-2) + 6×(8+3) = 122, it is also the number of elevator buttons in the Mitsubishi Electric building in Ratingen.

In the association football UEFA Champions League, there are 32 teams playing eight four-team double round-robin tournaments followed by a 16-team two-legged knockout tournament with a single-legged final, resulting in **125** matches.

According to the Redmond–Sun conjecture, the numbers 121 and **125** are the seventh largest perfect powers not separated by a prime.

The E_{7} lattice has kissing number **126**.

It is also a magic number in nuclear physics.

In the association football Faroe Islands Premier League, there are 10 teams playing a triple round-robin tournament, resulting in **135** matches.

It is also the number of nominal AM radio frequencies (*n* × 9 kHz, where 17 <= *n* <= 31 or 59 <= *n* <= 178) in Europe, and the bandwidth (in kHz) of the longwave radio band.

In the Australian soccer A-League, there are 10 teams playing a triple round-robin tournament followed by a six-team single-elimination tournament, resulting in **140** matches.

It was also the character limit in Twitter messages, but it has now been increased to 280, except for CJK languages.

The Book of Psalms contains **150** psalms.

It is also the number of species in the first Pokémon list.

In Orthodox churches, the Book of Psalms contains **151** psalms.

It is also the number of species in the first Pokémon generation.

In each regular season of the Mexican association football Liga MX, there are 18 teams playing a single round-robin tournament, resulting in **153** matches.

It is also the first carrier frequency (in kHz) in the longwave radio band.

Furthermore, it is the number of fish in the second miraculous catch of fish.

**163** (one hundred sixty-three) is the number of white pips in a Chinese domino set.

It is also the largest Heegner number.

Furthermore, the McKay-Thompson series of monstrous moonshine span a 163-dimensional vector space.

In the association football Campionato Sammarinese di Calcio, there are 15 teams playing an eight-team double round-robin tournament and a seven-team double round-robin tournament with single-legged interleague matches followed by a six-team double-elimination tournament, resulting in **164** matches.

The isotope dysprosium-164 is the heaviest primordial nuclide without energetically allowed alpha or beta (including double beta and electron capture) decay modes.

In each tournament of the Mexican association football Liga MX, there are 18 teams playing a single round-robin tournament followed by an eight-team two-legged knockout tournament, resulting in **167** matches.

In China, the Band III starts at 167 MHz.

Furthermore, it is the number of hours in the spring DST transition week.

**168** (one hundred sixty-eight) is the number of pips in a double-six domino set.

It is also the order of the simple group PSL(2,7), which is isomorphic to GL(3,2).

Furthermore, it is also the number of hours in a week.

**190** (one hundred ninety) is the 19th triangular number, and therefore the number of tiles in a double-18 domino set.

With a leading zero, it is also the former German premium-rate telephone number prefix.

In addition, the exceptional Lie algebra E_{7½} has dimension 190.

There are **194** different chrominances, for which the RGB to Y'CbCr color conversion, as used in JPEG, leads to half-integer luminances.

It is also the number of conjugacy classes in the Monster group.

Furthermore, the Lucas–Lehmer primality test, which is used for finding the largest known primes, gives 194 after two iterations.

In the association football UEFA Europa League, there are 48 teams playing 12 four-team double round-robin tournaments followed by a 32-team two-legged knockout tournament with a single-legged final, resulting in **205** matches.

It is also the number of nominal CCIR FM radio frequencies (*n* × 0.1 MHz, where 875 <= *n* <= 1,079) in some countries, such as Russia.

**210** is the largest number that is both a triangle and a pentatope number.

It is also the product of the single-digit prime numbers.

Furthermore, the Pawukon calendar has a period of 210 days.

In each tournament of the Colombian association football Categoría Primera A, there are 20 teams playing a single round-robin tournament with two-legged rivalries followed by an eight-team two-legged knockout tournament, resulting in **214** matches.

It is also the number of Kangxi radicals.

There are exactly **220** yards in a furlong.

It is also approximately the number of imperial gallons in a cubic metre.

Furthermore, it is the mains voltage in many countries.

**223** is the only nonnegative integer which cannot be written as a sum of 36 nonnegative fifth powers.

It is also the largest integer which cannot be written as a sum of 32, 33, 34 or 35 nonnegative fifth powers; there are only fifteen, ten, six and three nonnegative integers with this property, respectively.

Furthermore, in some countries, such as China, the Band III ends at 223 MHz.

Finally, there are 223 non-control 8-bit characters.

**239** is the largest integer which cannot be written as a sum of eight nonnegative cubes; the only other nonnegative integer with this property is 23.

It is also one of only seven nonnegative integers which cannot be written as a sum of eighteen fourth powers; the largest integer with this property is 559.

Since 239^{2} + 1 = 2 × 13^{4}, it also appears in many Machin-like formulae.

The E_{8} lattice has kissing number **240**.

It is also the number of matches in the association football Czech First League, which has a 16-team double round-robin tournament, and the association football Israeli Premier League, which has a 14-team double round-robin tournament followed by a six-team double round-robin tournament and an eight-team single round-robin tournament.

Furthermore, it was the number of pre-decimal pence in a pound sterling.

Finally, it is the mains voltage in some countries.

The exceptional Lie algebra E_{8} has dimension **248**.

It is also the number of positive commandments in Judaism.

Furthermore, it was the number of Bundestag constituencies during 1965–1990.

In the association football Danish Superliga, there are 14 teams playing a double round-robin tournament followed by a six-team double round-robin tournament and two four-team double round-robin tournaments, seven two-legged play-off ties, and a single-legged play-off tie, resulting in **251** matches.

It is also the number of species in the first two Pokémon generations.

The isotope fermium-**257** is the heaviest nuclide that can be formed by neutron capture from naturally occuring elements.

The number 257 is also a Fermat prime \(2^{2^3}+1\).

In the association football Paraguayan Primera División, there are 12 teams playing two double round-robin tournaments, resulting in **264** matches.

It is also approximately the number of U.S. gallons in a cubic metre.

Furthermore, it is the highest possible game value (*Grand ouvert* with all four jacks) in the German card game of Skat.

In the German association football Bundesliga, there are 18 teams playing a double round-robin tournament, resulting in **306** matches.

It is also the number of channels in the German 80 MHz police radio band.

The number **343** is the largest known undulating perfect power with an exponent larger than 2.

The equation 169 + **343** = 512 is one of ten known solutions to the Fermat–Catalan conjecture.

Some association football competitions, such as the UEFA Cup, have five-team single round-robin tournaments in the group stage. With three points for a win, there are exactly **355** possible points columns in the final standings of a group.

The number π is approximately equal to 355/113.

**360** is the order of the alternating group of degree 6, which is isomorphic to the matrix group PSL(2,9), and to B_{2}(2)′. It is one of the few non-abelian simple groups with only three distinct prime factors in the order.

It is also the number of degrees in the circle.

And in the Maya calendar, one *tun* is equal to 360 *k'in*.

In Judaism, there are **365** negative commandments.

It is also the number of days in a common year.

In the association football Liga de Fútbol Profesional Boliviano, there are 12 teams playing three double round-robin tournaments, resulting in **396** matches.

It is also the number of municipalities in North Rhine-Westphalia.

The United States House of Representatives has **435** seats.

It was also the concert pitch (in Hz), but it has been raised to 440.

**454** is the largest integer which cannot be written as a sum of seven nonnegative cubes; there are only 17 nonnegative integers with this property.

It is also approximately the number of grams in a pound avoirdupois.

Furthermore, it is (not considering myriad, lakh and -illiard) the number of numbers with an accepted English name not containing the letter “o”.

In the Spanish association football Segunda División, there are 22 teams playing a double round-robin tournament, resulting in **462** matches.

It is also the fifth largest known squarefree number of the form _{2n−1}C_{n}.

**495** (four hundred ninety-five) is the number of pips in a double-nine domino set.

It is also the Kaprekar's constant for three-digit numbers.

**496** (four hundred ninety-six) is the third perfect number.^{[1]} Its divisors are 1,2,4,8,16,31,62,124,248 and 496.

Furthermore, it was the nominal number of Bundestag mandates during 1965–1990.

The Burj Khalifa is the highest building in the world. Its main service elevator has a rise of **504**.2 metres.

It is also the order of the simple group PSL(2,8), which is isomorphic to PGL(2,8) and SL(2,8).

According to Emil Fackenheim, there should be **614** commandments in Judaism.

It is also the number of grid points on a globe with a 10° net.

There are exactly **660** feet in a furlong.

It is also the order of the simple group PSL(2,11).

Furthermore, the engine displacement of kei cars is limited to 660 cm^{3}.

In common years, the month of February has **672** hours.

It is also the number of seats in the 14th Bundestag, which was until 2017 the largest democratically elected national parliament house ever.

The 19th Bundestag is the largest democratically elected national parliament house ever; it has **709** seats.

A method for generating a sequence of primes is to start with 1, then choosing the smallest prime successor of a multiple of the previous number in each step. The compositeness can be easily certified by Fermat or Miller-Rabin, and the primality by Pratt. The resulting sequence starts with 1, 2, 3, 7, 29, 59, 709, … (OEIS A061092).

**719** is the natural number succeeding 718 and preceding 720.

It is the number of hours in a 30-day month (April, June, September or November) containing a spring DST transition.

It is a prime number. As 119, 121 and 721 are all composite, it is the only 3-digit factorial prime.

Some high-definition television services have **720** visible scan lines.

It is also the number of pixels in a standard-definition television scan line.

It is equal to 6!, the factorial of 6. Consequently, it is the order of the symmetric group of degree 6, which is isomorphic to B_{2}(2), and has an outer automorphism.

Finally, it is the number of hours in a 30-day month (April, June, September or November) not containing a DST transition.

**721** is the natural number succeeding 720 and preceding 722.

It is the number of hours in a 30-day month (April, June, September or November) containing a fall DST transition.

It is also the number of species in the first six Pokémon generations.

The constant term in the Laurent series of the j-invariant is equal to **744**.

It is also the number of hours in a 31-day month (January, March, May, July, August, October or December) not containing a DST transition.

**777** is a lucky number. For instance, the prize for 4 correct final digits in the German lottery *Spiel 77* is equal to 777 euros, and there is a 777 jackpot line in many slot machines.

It is the 124th lucky number (in the mathematical sense).

Its prime factorization is 3 × 7 × 37.

There were **960** farthings in a pound sterling.

It is also the number of starting positions in Fischer Random Chess, which is therefore also known as Chess960.

### 4-6 digits Edit

Some high-definition television services have **1,080** visible scan lines.

It is also the bandwidth (in kHz) of the AM broadcast band in most countries of the world.

Furthermore, it is the number of *halakim* in an hour.

Finally, it is the radius of the moon in miles.

**1,092** (one thousand ninety-two) is the number of pips in a double-12 domino set.

It is also the order of the simple group PSL(2,13).

The prize for correctly answering the first two questions in the French game show *Qui veut gagner des millions ?* was equal to **1,500** euros.

It is also one of the running distances (in metres).

The Dutch East India Company was founded in the year **1602**.

For this reason, a video game has been named Anno 1602.

It is also the last carrier frequency (**1,602** kHz) in the medium wave radio band in the Old World.

Furthermore, the elementary charge is approximately equal to **1.602** × 10^{−19} coulombs.

The Roman Empire lasted from 753 BC to 1453, for a total of **2,205** years.

For this reason, a video game has been named Anno 2205.

It is also approximately the number of pounds in a tonne.

**3,420** (three thousand four hundred twenty) is the number of pips in a double-18 domino set.

It is also the order of the simple group PSL(2,19).

**4,060** is the number of known nonnegative integers which cannot be written as a sum of five nonnegative cubes; the largest of which is 1,290,740.

It is also the number of points in the smallest faithful permutation representation of the Rudvalis group; its one-point stabilizer is the automorphism group of the Tits group.

**7,140** is the largest number that is both a triangle and a tetrahedral number.

It is also the area of a football pitch in square metres.

**8,888** is the sum of all czech coins & banknotes.^{[2]}

1 + 2 + 5 + 10 + 20 + 50 + 100 + 200 + 500 + 1,000 + 2,000 + 5,000 = 8,888

It is also associated with good luck in China.

The equation 243 + **14,641** = 14,884 is one of ten known solutions to the Fermat–Catalan conjecture.

The number **14,641** is also the first palindromic fourth power with more than one digit.

When treated as consecutive single digits, it is also the fourth line of Pascal's triangle.

**20,160** is the smallest order with more than one simple group.

One of them is the alternating group of degree 8, which is isomorphic to the matrix groups GL(4,2), PGL(4,2), PSL(4,2), and SL(4,2).

The other is the Mathieu group of degree 21, which is isomorphic to the matrix group PSL(3,4).

It is also the number of minutes in a fortnight.

#### Approximations Edit

Notation | Approximation |
---|---|

Scientific notation | \(2.016 \times 10^4\) (exact) |

Up-arrow notation | \(142↑2\) |

Chained arrow notation | \(142→2\) |

Hyperfactorial array notation | \(7!\) |

Fast-growing hierarchy | \(f_2(11)\) |

Hardy hierarchy | \(H_{\omega^2}(11)\) |

Slow-growing hierarchy | \(g_{\omega^2}(142)\) |

**25,920** is the order of the simple group ^{2}A_{3}(2^{2}), which is isomorphic to B_{2}(3). It is one of the few non-abelian simple groups with only three distinct prime factors in the order.

It is also the number of *halakim* in a day.

Notation | Approximation |
---|---|

Scientific notation | \(2.5920*10^4\) (exact) |

Fast-growing hierarchy | \(f_2(11)<n<f_1^5(f_2(7))\) |

The 3,999 undisputed Roman numerals use a total of **30,000** characters.

It was also the prize for correctly answering the first three questions in the Japanese game show *Quiz $ Millionaire* in Japanese yen.

The prize for correctly answering the first nine questions in the Indian game show *Kaun Banega Crorepati* is equal to **160,000** Indian rupees.

In the Maya calendar, one *kalabtun* is equal to 160,000 *tun*.

**181,440** is the order of the alternating group of degree 9. It is the largest alternating group, for which the Sylow 2-subgroup is not the largest Sylow subgroup.

It is also the number of *halakim* in a week.

Some cars produced in the 1990s and 2000s, such as the Volkswagen Golf Mk3 and the Toyota Corolla (E120), have problems with their digital odometers, if they reach the number **300,000**.

It is also used as an approximation for the speed of light, which is equal to 299,792.458 km/s or 299,792,458 m/s.

Furthermore, it was also the prize for correctly answering the first three questions in the Italian game show *Chi vuol essere miliardario?* in Italian lire.

### 7-9 digits Edit

**1,250,000** (one million two hundred fifty thousand) is the number of dominoes set up for Saturday, December 27, 1986 in Lisse.

It is also the second prize in the Spanish Christmas Lottery in euros.

It is also the prize for correctly answering the first twelve questions in the Indian game show *Kaun Banega Crorepati* in Indian rupees.

**1,500,000** (one million five hundred thousand) is the number of dominoes set up for Saturday, January 2, 1988 in Rosmalen.

It was also the prize for correctly answering the first eleven questions in the Japanese game show *Quiz $ Millionaire* in Japanese yen.

**2,500,000** (two million five hundred thousand) is the number of dominoes set up for Friday, November 5, 1999 in Zuidlaren.

It is also the prize for correctly answering the first thirteen questions in the Indian game show *Kaun Banega Crorepati* in Indian rupees.

Furthermore, it was also the prize for correctly answering the first twelve questions in the Japanese game show *Quiz $ Millionaire* in Japanese yen.

**4,000,000** (four million) is the number of dominoes set up for Friday, November 15, 2002 in Leeuwarden.

It is also the first prize (*El Gordo*) in the Spanish Christmas Lottery in euros.

It was also the prize for correctly answering the first seven questions in the Italian game show *Chi vuol essere miliardario?* in Italian lire.

This number is equal to 2,000^{2}.

#### In other notations Edit

Notation | Approximation |
---|---|

Scientific notation | \(4 \times 10^6\) (exact) |

Up-arrow notation | \(2,000↑2\) (exact) |

BEAF | \(\{2000,2\}\) (exact) |

Chained arrow notation | \(2,000→2\) (exact) |

Hyperfactorial array notation | \(10!\) |

Fast-growing hierarchy | \(f_2(18)\) |

Hardy hierarchy | \(H_{\omega 8}(15,625)\) (exact) |

Slow-growing hierarchy | \(g_{\omega^2}(2,000)\) (exact) |

The prize for correctly answering the first eleven questions in the Italian game show *Chi vuol essere miliardario?* was equal to **64,000,000** Italian lire.

In the Maya calendar, one *alautun* is equal to 64,000,000 *tun*.

The prize for correctly answering all sixteen questions in the Indian game show *Kaun Banega Crorepati* is equal to **70,000,000** Indian rupees.

Yitang Zhang has proven that there are infinitely many prime gaps not larger than 70 million.

The number **300,000,000** is used as an approximation for the speed of light, which is equal to 299,792,458 m/s.

It was also the prize for correctly answering the first four questions in the Turkish game show *Kim 500 Milyar İster?* in first Turkish lira.