googol

One entry found for googol.

Main Entry: googol

Pronunciation: gu-gol

Function: noun

Etymology: coined by Milton Sirotta born about 1929 nephew of Edward Kasner died 1955 American mathematician : the figure 1 followed by 100 zeroes equal to 10^{100} – Websters

10^{1} |
= | 10 |

10^{6} |
= | 1,000,000 |

10^{100} |
= | 1 googol or 1 followed by 100 zeros |

10^{googol} |
= | 1 googolplex or 1 followed by 1 googol zeros |

10^{26} |
= | # of atoms in an apple pie |

10^{80} |
= | # of elementary particles (protons, neutrons and electrons) in the universe. = Less than a googol! |

– Carl Sagan

googolplex

A googolplex is the number one followed by one googol zeroes, or ten raised to the power of one googol:

10^{googol} = 10^{10}^{100}.

In the documentary Cosmos, physicist and broadcast personality Carl Sagan estimated that writing a googolplex in numerals (i.e., “1,000,000,000…”) would be physically impossible, since doing so would require more space than the known universe occupies.

For more info on googol and googolplex, Google them!