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

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Exponent Range:










MnStatusDetails
1006331Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
2012663720.9old
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)2025-09-01KrieselA8B65338AFF8BBCF013
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-28Oliver KruseC79F8FFB4E13D4981013
Verified2017-10-15Oliver KruseC79F8FFB4E13D498147745513
Verified2017-12-26ATHC79F8FFB4E13D49812538013
Verified2022-05-12Jorge CoveiroA8B65338AFF8BBCF166272253
Verified2022-05-12Jorge CoveiroA8B65338AFF8BBCF166272253
Verified2024-01-14Naegi MakotoA8B65338AFF8BBCF19732753
History
DateUserTypeResult
2025-09-01SteveCCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-01KrieselC-PRP
A8B65338AFF8BBCF
PRP proof power = 6
PRP: Verified (Factored)
Proof certified good
2024-01-16curtiscCERT
PRP Certification
Proof certified good
2024-01-14Naegi MakotoC-PRP
M1006331/2012663 : A8B65338AFF8BBCF
PRP proof power = 6
PRP: Verified
Proof certified good
2022-05-12Jorge CoveiroC-PRP
M1006331/2012663 : A8B65338AFF8BBCF
PRP proof power = 6
PRP: Verified
PRP proof never uploaded
2021-06-15ViliamFNF-PM1
B1=10000000, B2=1110000000
2019-11-03JossNF-PM1
B1=1006331, B2=100633100, E=12
2019-11-01JossNF-PM1
B1=1006331, B2=10063310, E=12
2017-12-26ATHC-PRP
M1006331/2012663 : C79F8FFB4E13D498
PRP: Verified
PRP without proof (not generated)
2017-10-15Oliver KruseC-PRP
M1006331/2012663 : C79F8FFB4E13D498
PRP: Verified
PRP without proof (not generated)
2017-09-28Oliver KruseC-PRP
M1006331/2012663 : C79F8FFB4E13D498
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=300000, B2=10000000, E=12