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

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MnStatusDetails
3104501Factored
FactorDigitsBitsDate
3529289273376770300472168.32020-12-09 01:35:11
ECM
DigitsB1Curves
255000024 / 280
Estimated T-Level: 20.4
TF below 2^63 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Harald Alvestrand33A3C7E555F628D50
Verified (Factored)1999-05-30Vaughn Hughes33A3C7E555F628D5164346
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2020-12-09Jayder5E50980B78347194177846153
History
DateUserTypeResult
2021-12-22JossNF-PM1
B1=3104501, B2=637437570
2021-12-19JossNF-PM1
B1=3104501, B2=108997350
2021-06-17JossNF-PM1
B1=3104501
2021-01-17JossNF-PM1
B1=310450, B2=3104501, E=6
2020-12-09ky0urakuCERT
PRP Certification
Proof certified good
2020-12-09JayderC-PRP
M3104501/352928927337677030047 : 5E50980B78347194
PRP proof power = 7
PRP: Verified
Proof certified good
2020-12-09GANF-ECM
Factor: 352928927337677030047 / (ECM curve 2, B1=50000, B2=5000000, Sigma=3736596445116858)
2019-02-04TJAOINF
no factor from 2^67 to 2^68
2018-07-22mikrNF-PM1
B1=3000000, B2=100000000, E=12
2017-04-11Gordon SpenceNF
no factor from 2^66 to 2^67
2017-03-11JossNF-PM1
B1=269568, B2=2695680, E=6
2017-02-15JossNF-PM1
B1=224640, B2=2246400, E=6
2017-02-04JossNF-PM1
B1=187200
2017-01-19JossNF-PM1
B1=156000
2016-12-27JossNF-PM1
B1=120000
2016-08-26JossNF-PM1
B1=100000, B2=4250000, E=6
2015-06-11ThaNF
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
2011-11-01markrNF
no factor from 2^61 to 2^62
2011-08-21Squeeky_SquirrelNF-PM1
B1=100000, B2=2125000, E=6
2009-07-03Carsten KossendeyNF-PM1
B1=15000, B2=180000
2009-02-12Sturle SundeNF
no factor from 2^60 to 2^61