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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
16591571Factored
FactorDigitsBitsDate
354780587703023660629299146528726280737121.42020-03-30 03:23:44
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)2003-08-08Sergey AverchenkovAEB81AE7CA7B7B7014292721
Verified (Factored)2006-03-14Mensa PolskaAEB81AE7CA7B7B7010402556
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-07-05M MillerB949BDCCD9252C7D11202506053
Verified2020-09-18JaytholomewB949BDCCD9252C7D11198601153
P-1 factors
DateFactorB1B2
2020-03-3035478058770302366062929914652872628073250006500000
History
DateUserTypeResult
2024-03-09nordiNF-PM1
B1=500000, B2=266674590
2024-01-19nordiNF-PM1
B1=500000
2020-09-18Ben DeloCERT
PRP Certification
Proof certified good
2020-09-18JaytholomewC-PRP
M16591571/3547805877030236606292991465287262807 : B949BDCCD9252C7D
PRP proof power = 8
PRP: Verified
Proof certified good
2020-07-05M MillerC-PRP
M16591571/3547805877030236606292991465287262807 : B949BDCCD9252C7D
PRP: Verified
PRP without proof (not generated)
2020-03-30James HeinrichF-PM1
Factor: 3547805877030236606292991465287262807 / (P-1, B1=325000, B2=6500000, E=12)
2018-03-08ramgeisNF
no factor from 2^68 to 2^69
2018-03-08ramgeisNF
no factor from 2^67 to 2^68
2016-03-16Mark RoseNF
no factor from 2^65 to 2^66
2014-09-07NesowaNF
no factor from 2^66 to 2^67