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Septentrecentillion

A Septentrecentillion (1 Septentrecentillion) is 10 to the power of 924 (10^924). This is an excessively astronomical number!

How many zeros in a Septentrecentillion?

There are 924 zeros in a Septentrecentillion.

What's before Septentrecentillion?

A Sestrecentillion is smaller than a Septentrecentillion.

What's after Septentrecentillion?

A Octotrecentillion is larger than a Septentrecentillion.

Septentrecentillionaire

A Septentrecentillionaire is someone whos assets, net worth or wealth is 1 or more Septentrecentillion. It is unlikely anyone will ever be a true Septentrecentillionaire. If you want to be a Septentrecentillionaire, play Tap Tales!

Is Septentrecentillion the largest number?

Septentrecentillion is not the largest number. Infinity best describes the largest possible number - if there even is one! We cannot comprehend what the largest number actually is.

Septentrecentillion written out

Septentrecentillion is written out as:

1,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000


Big Numbers

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