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

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MnStatusDetails
1077023Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
381266143928.5old
1047737304111737511856.52015-04-10 11:46:44
150313997788658235708777432683.62020-08-07 11:04:23
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)2025-09-01Kriesel7649B2089ACCED37013
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-28Oliver KruseCA16751ECBB2D84F2013
Verified (Factored)2017-10-16Oliver KruseCA16751ECBB2D84F258412913
Verified (Factored)2018-01-01ATHCA16751ECBB2D84F228736113
Verified2020-08-07M Miller7649B2089ACCED37337115253
Verified2020-08-08marssystems7649B2089ACCED37386293053
History
DateUserTypeResult
2025-09-07stenleiCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-01KrieselC-PRP
7649B2089ACCED37
PRP proof power = 6
PRP: Verified (Factored)
Proof certified good
2024-08-22cramsey87NF-PM1
B1=3000000, B2=3050026980
2020-08-08marssystemsC-PRP
M1077023/381266143/104773730411173751/15031399778865823570877743 : 7649B2089ACCED37
PRP: Verified
PRP without proof (not generated)
2020-08-07M MillerC-PRP
M1077023/381266143/104773730411173751/15031399778865823570877743 : 7649B2089ACCED37
PRP: Verified
PRP without proof (not generated)
2020-08-07TJAOIF-ECM
Factor: 15031399778865823570877743 / (ECM curve 15, B1=250000, B2=25000000)
2018-01-01ATHC-PRP
M1077023/381266143/104773730411173751 : CA16751ECBB2D84F
PRP: Verified
PRP without proof (not generated)
2017-10-16Oliver KruseC-PRP
M1077023/381266143/104773730411173751 : CA16751ECBB2D84F
PRP: Verified
PRP without proof (not generated)
2017-09-28Oliver KruseC-PRP
M1077023/381266143/104773730411173751 : CA16751ECBB2D84F
PRP: Verified
PRP without proof (not generated)
2015-04-10TJAOIF
Factor: 104773730411173751 / TF: 56-57