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Wednesday, 20 January 2016

New largest prime discovered $2^{74\,207\,281}-1$

New largest prime discovered 

$$\Huge2^{74\,207\,281}-1$$

Recall a prime number is one which is only divisible by itself and $1$ and the smallest prime numbers are $2,3,5,7,11,13,17,...$.

The new largest prime number has got over $22$ million digits! that's right!
The number $1\,000\,000$ has $7$ digits! Can you imagine a number with $22$ million digits!
A book may have say $2000$ characters to a page, so that's about $22\,000\,000\div 2000=11\,000$ pages just to write out the number long hand!

PHYS.ORG

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