Q: How big is a centillion?

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A googol. It is a 1 with 100 zeros after it.

centillion=303 zeros. (It is good to guess, but it's better to see this answer here, or look somewhere else on the computer.)

plural centillions (as after a numeral) centillion. a cardinal number represented in the U.S. by 1 followed by 303 zeros, and in Great Britain by 1 followed by 600 zeros. adjective. amounting to one centillion in number.

A billion is one with nine zeros after it. A quadrillion is one with fifteen zeros after it, a googol is one with one hundred zeros after it, and a centillion is one with three hundred and three zeros after it. So it is a centillion.

One centillion.

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4.3% of the universe (~45 Billion Light year diameter) is Planets, Gases and Such. Dark Matter (WMP, or Weakly Interacting Mass Particle) is invisible. If my math is correct, (and i did it on a hitachi supercomputer) the universe should weigh around... 790 centillion centillion centillion centillion centillion centillion centillion centillion centillion centillion centillion centillion centillion centillion centillion centillion centillion centillion Tonnes, to the 947,304,691,120,161,109,425e+4964546546516548897984351th Power! I Guess About 74 followed by trllions of trillions of trillions of digits, pounds thats heavy

centillion

Millentinion, one thousand centillion

A centillion.

1 centillion = 10303

centillion zeros (centillion is 303 zeros)

1 centillion = 10303

The googol. Trumped by the googolplex.

According to the link I'm posting, a quadrillion is 1015, and a centillion is 10303, so centillion is bigger.

A googol. It is a 1 with 100 zeros after it.

Centillion is a 1 with 303 zeros so this is the biggest.

A centillion is ten to the power 303 (short scale) or 10 to the power 600 (long scale), so if you square that you get ten to the power 606 (short scale) or 10 to the power 1200 (long scale).Note: English-speaking countries normally use the short scale.