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

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MnStatusDetails
1087357Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
14679319511030.5old
2106608969820051591857.52015-06-29 14:24:45
ECM
DigitsB1Curves
2550000280 / 280
30250000100 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP
StatusDateUserResidueShiftTypeBase
Verified (Factored)2025-09-01Kriesel883B45E695127C68013
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-29Oliver Kruse2A59E45FD2E21DFA2013
Verified2017-10-16Oliver Kruse2A59E45FD2E21DFA223637513
Verified2018-01-03ATH2A59E45FD2E21DFA217481713
History
DateUserTypeResult
2025-09-01o-jillCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-01KrieselC-PRP
883B45E695127C68
PRP proof power = 6
PRP: Verified (Factored)
Proof certified good
2024-10-04timc995NF-PM1
B1=2000000, B2=63130867800
2018-01-03ATHC-PRP
M1087357/1467931951/210660896982005159 : 2A59E45FD2E21DFA
PRP: Verified
PRP without proof (not generated)
2017-10-16Oliver KruseC-PRP
M1087357/1467931951/210660896982005159 : 2A59E45FD2E21DFA
PRP: Verified
PRP without proof (not generated)
2017-09-29Oliver KruseC-PRP
M1087357/1467931951/210660896982005159 : 2A59E45FD2E21DFA
PRP: Verified
PRP without proof (not generated)
2015-06-29TJAOIF
Factor: 210660896982005159 / TF: 57-58