Megaprime

A megaprime is a prime number with at least one million decimal digits^[1] (whereas titanic prime is a prime number with at least 1000 digits, and gigantic prime has at least 10000 digits).

As of 15 April 2011 (2011 -04-15)^[update], 35 megaprimes are known.^[2] The first to be found was the Mersenne prime 2^6972593−1 with 2,098,960 digits, discovered in 1999 by Nayan Hajratwala, a participant in the distributed computing project GIMPS.^[3][4]

The term bevaprime has also been proposed as a term for a prime with at least 1,000,000,000 digits.^[4]

See also

• Largest known prime number
• Electronic Frontier Foundation—Awards

References

1. ^ Chris Caldwell, The Prime Glossary: megaprime at The Prime Pages. Retrieved on 2008-01-04.
2. ^ Chris Caldwell, The Largest Known Primes at The Prime Pages. Retrieved on 2011-04-15.
3. ^ GIMPS press release, GIMPS Finds First Million-Digit Prime. Retrieved on 2008-01-04.
4. ^ ^{a b} Chris Caldwell, The Largest Known Prime by Year: A Brief History at The Prime Pages. Retrieved on 2008-09-28.

External links

• Chris Caldwell, The Largest Known Primes Database at The Prime Pages.
• PrimeGrid’s 321 Prime Search, about the discovery of 3×2^6090515−1.