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

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MnStatusDetails
61594847Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
193919791074821806203832374.02020-12-29 04:17:50
LL
StatusDateUserResidueShift
Verified (Factored)2013-10-25-Anonymous-1BA89163F0CE5CCC47773386
History
DateUserTypeResult
2020-12-29RobertKazanF
Factor: 19391979107482180620383 / TF: 74-75*
2016-03-01Judge HaleNF
no factor from 2^73 to 2^74
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2013-10-25-Anonymous-C-LL
1BA89163F0CE5CCC
2013-05-16BdotNF-PM1
B1=585000, B2=11992500, E=6
2012-04-28Jerry HallettNF
no factor from 2^69 to 2^73
2009-07-27MylesNF
no factor from 2^68 to 2^69
2009-07-25A. K. SaxenaNF
no factor from 2^67 to 2^68
2009-07-20-Anonymous-NF
no factor from 2^66 to 2^67
2009-04-13KAMCOBILLNF
no factor from 2^65 to 2^66
2009-04-11KAMCOBILLNF
no factor from 2^64 to 2^65
2009-02-05Net_ForceNF
no factor from 2^63 to 2^64