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

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MnStatusDetails
2335877Factored
FactorDigitsBitsDate
2578265713040834319051592477.82021-06-13 17:14:51
ECM
DigitsB1Curves
2550000145 / 280
Estimated T-Level: 22.6
TF below 2^70 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Mark CrosbyD12DADDF40FD21170
Verified (Factored)1999-03-01Allister WeiD12DADDF40FD21172082762
Verified (Factored)2018-05-07kkmrkkblmbrbkD12DADDF40FD21171356356
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-06-16Sébastien BROUCKE713722662DEBAB491115060553
Verified2021-06-16ATH713722662DEBAB49194038153
History
DateUserTypeResult
2021-06-16lugge_waCERT
PRP Certification
Proof certified good
2021-06-16ATHC-PRP
M2335877/257826571304083431905159 : 713722662DEBAB49
PRP proof power = 7
PRP: Verified
Proof certified good
2021-06-16Sébastien BROUCKEC-PRP
M2335877/257826571304083431905159 : 713722662DEBAB49
PRP: Verified
PRP without proof (not generated)
2021-06-13kutensF-ECM
Factor: 257826571304083431905159 / (ECM curve 2, B1=50000, B2=5200000, Sigma=519660519257648)
2021-06-10TJAOINF
no factor from 2^68 to 2^69
2019-03-25TJAOINF
no factor from 2^67 to 2^68
2018-05-07kkmrkkblmbrbkC-LL
D12DADDF40FD2117
2018-02-22Sid & AndyNF-PM1
B1=6000000, B2=180000000, E=12
2017-06-07Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^1 to 2^60
2015-10-25ramgeisNF
no factor from 2^65 to 2^66
2015-03-03VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-03VictordeHollanderNF
no factor from 2^63 to 2^64
2013-01-23dbaughNF
no factor from 2^62 to 2^63
2012-05-27Sebastian HornbostelNF
no factor from 2^61 to 2^62
2010-03-02BudNF-PM1
B1=500000, B2=10000000, E=12
2009-01-14Sturle SundeNF
no factor from 2^60 to 2^61