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

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MnStatusDetails
12085343Factored
FactorDigitsBitsDate
233230480864895904030368480872926673610340130.82021-12-13 11:16:22
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2001-02-25Alan Hamilton262CCC4918757BBC972792
Verified (Factored)2004-06-12Yi-Chang Chen262CCC4918757BBC5543456
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2022-01-20kutens22834B624DFA07941901396253
P-1 factors
DateFactorB1B2
2021-12-1323323048086489590403036848087292667361031400000651596400
History
DateUserTypeResult
2022-01-20reisfCERT
PRP Certification
Proof certified good
2022-01-20kutensC-PRP
M12085343/2332304808648959040303684808729266736103 : 22834B624DFA0794
PRP proof power = 8
PRP: Verified
Proof certified good
2021-12-13lycornF-PM1
Factor: 2332304808648959040303684808729266736103 / (P-1, B1=1400000, B2=651596400)
2021-10-24-Anonymous-NF
no factor from 2^71 to 2^72
2021-08-15SRBaseNF
no factor from 2^70 to 2^71
2021-08-06SRBaseNF
no factor from 2^69 to 2^70
2017-11-03ramgeisNF
no factor from 2^68 to 2^69
2015-05-28ThaNF
no factor from 2^67 to 2^68
2015-03-04ThaNF-PM1
B1=300000, B2=6000000, E=6
2015-02-09ThaNF
no factor from 2^66 to 2^67
2013-10-03NesowaNF
no factor from 2^65 to 2^66
2013-09-21lycornNF
no factor from 2^64 to 2^65