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
2687983Factored
FactorDigitsBitsDate
128378068091133.6old
391370324811135.22008-09-07 19:40:57
12732315691863936711960.12016-01-14 12:53:41
2092745567987768396412167.52022-09-22 09:42:09
ECM
DigitsB1Curves
25500003 / 280
Estimated T-Level: 20.1 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-30alpertronB8B4C39F7A5F93E33013
Verified (Factored)2017-11-15Oliver KruseB8B4C39F7A5F93E3358705613
Verified2022-09-28LordJulius702D6B689ABE96024137416553
Verified2022-09-28LordJulius702D6B689ABE9602481035153
History
DateUserTypeResult
2022-09-28curtiscCERT
PRP Certification
Proof certified good
2022-09-28LordJuliusC-PRP
M2687983/12837806809/39137032481/1273231569186393671/209274556798776839641 : 702D6B689ABE9602
PRP proof power = 7
PRP: Verified
Proof certified good
2022-09-28Chad Steenerson CERT
PRP Certification
Proof certified good
2022-09-28LordJuliusC-PRP
M2687983/12837806809/39137032481/1273231569186393671/209274556798776839641 : 702D6B689ABE9602
PRP proof power = 7
PRP: Verified
Proof certified good
2022-09-25JayderNF
no factor from 2^66 to 2^67
2022-09-25JayderNF
no factor from 2^65 to 2^66
2022-09-25JayderNF
no factor from 2^64 to 2^65
2022-09-25JayderNF
no factor from 2^63 to 2^64
2022-09-25JayderNF
no factor from 2^62 to 2^63
2022-09-25JayderNF
no factor from 2^61 to 2^62
2022-09-25LordJuliusNF
no factor from 2^66 to 2^67
2022-09-25LordJuliusNF
no factor from 2^65 to 2^66
2022-09-25LordJuliusNF
no factor from 2^64 to 2^65
2022-09-25LordJuliusNF
no factor from 2^63 to 2^64
2022-09-25LordJuliusNF
no factor from 2^62 to 2^63
2022-09-22TJAOIF
Factor: 209274556798776839641 / TF: 67-68
2019-07-04alpertronNF-PM1
B1=2000000, B2=60000000, E=12
2017-11-15Oliver KruseC-PRP
M2687983/12837806809/39137032481/1273231569186393671 : B8B4C39F7A5F93E3
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M2687983/1273231569186393671/12837806809/39137032481 : B8B4C39F7A5F93E3
PRP: Verified (Factored)
PRP without proof (not generated)
2016-01-14TJAOIF
Factor: 1273231569186393671 / TF: 60-61
2008-09-07Will EdgingtonF
Factor: 39137032481