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

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MnStatusDetails
1652839Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
11371532331030.1old
411140552426421111755.22015-01-11 12:28:41
ECM
DigitsB1Curves
2550000280 / 280
30250000134 / 640
Estimated T-Level: 26.0
TF below 2^82 is very unlikely to find new factors due to ECM effort.
PRP
StatusDateUserResidueShiftTypeBase
Verified (Factored)2025-09-02KrieselFDAF5E0539747DC4013
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-10-02Oliver Kruse92DAD9B378F67AAA2013
Verified2017-11-02ATH92DAD9B378F67AAA2158944913
History
DateUserTypeResult
2025-09-03Carlos PinhoCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-02KrieselC-PRP
FDAF5E0539747DC4
PRP proof power = 6
PRP: Verified (Factored)
Proof certified good
2017-11-02ATHC-PRP
M1652839/1137153233/41114055242642111 : 92DAD9B378F67AAA
PRP: Verified
PRP without proof (not generated)
2017-10-02Oliver KruseC-PRP
M1652839/1137153233/41114055242642111 : 92DAD9B378F67AAA
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=500000, B2=15000000, E=12
2015-01-11TJAOIF
Factor: 41114055242642111 / TF: 55-56