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

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MnStatusDetails
1081127Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
157850593824607911753.8old
354787420934223543953032374.92017-04-07 12:07:38
ECM
DigitsB1Curves
2550000280 / 280
30250000104 / 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)2025-09-01Kriesel6E52BE006001D4E4013
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-05Oliver Kruse149EDA870E61AB962013
Verified2017-10-16Oliver Kruse149EDA870E61AB9627875213
Verified2018-01-02ATH149EDA870E61AB96285084913
History
DateUserTypeResult
2025-09-01ANONYMOUSCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-01KrieselC-PRP
6E52BE006001D4E4
PRP proof power = 6
PRP: Verified (Factored)
Proof certified good
2024-08-20cramsey87NF-PM1
B1=7000000, B2=44808781290
2018-01-02ATHC-PRP
M1081127/15785059382460791/35478742093422354395303 : 149EDA870E61AB96
PRP: Verified
PRP without proof (not generated)
2017-10-16Oliver KruseC-PRP
M1081127/15785059382460791/35478742093422354395303 : 149EDA870E61AB96
PRP: Verified
PRP without proof (not generated)
2017-10-05Oliver KruseC-PRP
M1081127/15785059382460791/35478742093422354395303 : 149EDA870E61AB96
PRP: Verified
PRP without proof (not generated)
2017-09-28Oliver KruseC-PRP
M1081127/15785059382460791/35478742093422354395303 : 149EDA870E61AB96
PRP without proof (not generated)
2017-04-07TJAOIF-ECM
Factor: 35478742093422354395303 / (ECM curve 123, B1=50000, B2=5000000)