Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
62550583Factored
FactorDigitsBitsDate
204747406486179805569612374.12013-04-06 11:37:07
P-1 factors
DateFactorB1B2
2013-04-06204747406486179805569615950000
History
DateUserTypeResult
2022-03-30LordJuliusNF
no factor from 2^1 to 2^63
2013-04-06Brian ChanF-PM1
Factor: 20474740648617980556961
2013-03-31GrunwalderGIMPNF
no factor from 2^72 to 2^73
2013-03-31GrunwalderGIMPNF
no factor from 2^71 to 2^72
2013-03-11Florimond C.NF
no factor from 2^70 to 2^71
2011-12-12julianoNF
no factor from 2^69 to 2^70
2009-08-17CreweNetNF
no factor from 2^68 to 2^69
2009-08-15Michael HanschoNF
no factor from 2^67 to 2^68
2009-08-07Sturle SundeNF
no factor from 2^66 to 2^67
2009-02-24Sergey MiklinNF
no factor from 2^65 to 2^66
2009-02-17-Anonymous-NF
no factor from 2^64 to 2^65
2009-01-25Wojciech FlorekNF
no factor from 2^63 to 2^64