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## List of unnamed numbers with 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 E7 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 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 2392 + 1 = 2 × 134, it also appears in many Machin-like formulae.

The E8 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 E8 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 B2(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−1Cn.

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 cm3.

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 B2(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 2A3(22), which is isomorphic to B2(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 2,0002.

#### 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.