Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
52887973Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
7172208717271512650392169.32011-04-17 01:16:42
History
DateUserTypeResult
2011-04-17Jack The RipperF
Factor: 717220871727151265039
2010-04-01Sturle SundeNF
no factor from 2^68 to 2^69
2009-04-29MariettaNateNF
no factor from 2^67 to 2^68
2008-12-25Sturle SundeNF
no factor from 2^66 to 2^67
2008-12-24Sturle SundeNF
no factor from 2^65 to 2^66
2008-12-23-Anonymous-NF
no factor from 2^64 to 2^65
2008-11-21DerekNF
no factor to 2^64