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

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MnStatusDetails
3054967Factored
FactorDigitsBitsDate
488340797684217278199527772685.32021-05-04 16:10:01
ECM
DigitsB1Curves
255000063 / 280
Estimated T-Level: 21.1
TF below 2^65 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)George Woltman24E5617724F8528F0
Verified (Factored)Dax Prather24E5617724F8528F0
Verified (Factored)1999-05-30David Phillips24E5617724F8528F1787466
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-05-05mrhE313CE7A3A98F9C11272664553
History
DateUserTypeResult
2022-02-05JossNF-PM1
B1=1000000, B2=119912100
2022-01-20JossNF
no factor from 2^67 to 2^68
2021-10-22oodairaNF-PM1
B1=32497000, B2=1852329000, E=12
2021-05-05Ben DeloCERT
PRP Certification
Proof certified good
2021-05-05mrhC-PRP
M3054967/48834079768421727819952777 : E313CE7A3A98F9C1
PRP proof power = 7
PRP: Verified
Proof certified good
2021-05-04daveward2005F-ECM
Factor: 48834079768421727819952777 / (ECM curve 6, B1=50000, B2=5000000, Sigma=7093516761733165)
2021-03-18TJAOINF
no factor from 2^68 to 2^69
2018-07-28ramgeisNF
no factor from 2^67 to 2^68
2017-10-15mikrNF-PM1
B1=3000000, B2=100000000, E=12
2017-05-06Gordon SpenceNF
no factor from 2^66 to 2^67
2016-10-14Squeeky_SquirrelNF-PM1
B1=195000, B2=5362500, E=6
2015-06-06ThaNF
no factor from 2^65 to 2^66
2015-02-07VictordeHollanderNF
no factor from 2^64 to 2^65
2015-02-07VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-07dbaughNF
no factor from 2^62 to 2^63
2011-03-25Sid & AndyNF
no factor from 2^61 to 2^62
2010-10-06markrNF-PM1
B1=110000, B2=2447500, E=6
2009-02-12Sturle SundeNF
no factor from 2^60 to 2^61