(another Prime Pages' Glossary entries)
The Prime Glossary
Glossary: Prime Pages: Top 5000:
GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

In the same way that the term titanic prime was coined for 1,000+ digit primes and gigantic prime for 10,000+ digit primes; we define a megaprime to be a prime with at least 1,000,000 digits.

Almost all primes are megaprimes (because almost all integers have more than one million digits), but, as of March 2008, only fourteen are known!

See Also: TitanicPrime, GiganticPrime

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