Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
15958259Factored
FactorDigitsBitsDate
30037534670511163078972271.32020-10-14 13:38:14
ECM
DigitsB1Curves
25500001 / 280
Estimated T-Level: 20.0 ⓘ
TF below 2^61 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2002-12-16olivia breeB4150F23273B11A93512114
Verified (Factored)2006-03-28Phil NelsonB4150F23273B11A94421162
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-12-03mrh68680FFC6AB32C601412506953
P-1 factors
DateFactorB1B2
2020-10-143003753467051116307897150000030000000
History
DateUserTypeResult
2023-12-03WeakForceBosonCERT
PRP Certification
Proof certified good
2023-12-03mrhC-PRP
M15958259/3003753467051116307897 : 68680FFC6AB32C60
PRP proof power = 8
PRP: Verified
Proof certified good
2023-11-02nordiNF-PM1
B1=480000, B2=264402600
2023-09-08nordiNF-PM1
B1=480000
2020-10-14ThaF-PM1
Factor: 3003753467051116307897 / (P-1, B1=1500000, B2=30000000, E=12)
2020-07-05YxinityNF
no factor from 2^69 to 2^70
2018-02-15ramgeisNF
no factor from 2^68 to 2^69
2018-02-15ramgeisNF
no factor from 2^67 to 2^68
2016-03-16Mark RoseNF
no factor from 2^65 to 2^66
2014-07-29NesowaNF
no factor from 2^66 to 2^67