This page contains science-related numbers.

## Edit

- The reciprocal of the fine-structure constant is approximately equal to
**137**. - There are
**230**space groups. - The number
**300,000**is used as an approximation for the speed of light, which is equal to 299,792.458 km/s or 299,792,458 m/s.- It was also the prize for correctly answering the first three questions in the Italian game show
*Chi vuol essere miliardario?*in Italian lire. - Furthermore, 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 this number.

- It was also the prize for correctly answering the first three questions in the Italian game show
**299,792,458**is the speed of light in a vacuum, as measured in meters per second. It is usually denoted as \(c\).- Its prime factorization is 2 × 7 × 73 × 293,339.

- 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.

- It was also the prize for correctly answering the first four questions in the Turkish game show
- The radiation emitted by the hyperfine transition in the ground state of caesium-133 makes
**9,192,631,770**oscillations per second.^{[1]}- Its prime factorization is 2 × 3
^{2}× 5 × 7^{2}× 47 × 44,351.

- Its prime factorization is 2 × 3
- The mass–energy equivalence (E=mc
^{2}) implies, that a small mass corresponds to a large energy. For instance, a kilogram corresponds to the energy of**89,875,517,873,681,764**joules.

## Edit

- The number of possible isotopical isomers of Mirex is (2^22+2^12+2^11+2^11)/4, which amounts to
**1,050,624**.- Its prime factorization is 2
^{11}× 3^{3}× 19.

- Its prime factorization is 2
- The number of possible isotopical isomers of 2,3,7,8-Tetrachlorodibenzofuran is (2^20*3+2^10*3)/2, which amounts to
**1,574,400**.- Its prime factorization is 2
^{9}× 3 × 5^{2}× 41.

- Its prime factorization is 2
- On July 10, 1976, the most poisonous chemical substance (namely, 2,3,7,8-Tetrachlorodibenzo-p-dioxin) was the cause of the Seveso disaster. The number of possible isotopical isomers of this substance is (2^20*3^2+2^10*3^2+2^10*3+2^10*3)/4, which amounts to
**2,363,136**.- Its prime factorization is 2
^{8}× 3 × 17 × 181.

- Its prime factorization is 2
- The number of possible isotopical isomers of DDT is ((2^11+2^7)/2)^2*(2^6+2^4+2^4)/3, which amounts to
**37,879,808**.- Its prime factorization is 2
^{17}× 17^{2}.

- Its prime factorization is 2
- The number of possible isotopical isomers of
*o*,*p'*-DDT is 2*2^11*(2^11+2^7)/2*(2^6+2^4+2^4)/3, which amounts to**142,606,336**.- Its prime factorization is 2
^{23}× 17.

- Its prime factorization is 2

## Approximations of these numbers Edit

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

Scientific notation | \(2.99792458*10^8\) (exact) |

Arrow notation | \(7 \uparrow 10<n<26 \uparrow 6\) |

Arrow notation (more precise) | \(669 \uparrow 3<n<670 \uparrow 3\) |

Arrow notation (more precise) | \(17,314 \uparrow 2<n<17,315 \uparrow 2\) |

Hyper-E notation | \(3E8\) |

Factorial | \(12!\) |

Fast-growing hierarchy | \(f_2(27)\) |

Hardy hierarchy | \(H_{\omega 18}(24)\) |

Slow-growing hierarchy | \(g_{\omega^8 3}(10)\) |

Notation Array Notation | \((10\{1,3\}8)\) |