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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MnStatusDetails
1779529Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
57621149031032.4old
3617517162974734850261735032788.22020-09-03 18:28:26
ECM
DigitsB1Curves
2550000280 / 280
30250000108 / 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)2025-09-02KrieselAFEE3B29E0604552013
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-10-03Oliver Kruse2031A21A5089C43D1013
Verified (Factored)2017-11-04ATH2031A21A5089C43D172515713
Verified2020-09-06fre_gamesAFEE3B29E0604552272951753
Verified2020-09-07kutensAFEE3B29E06045522106000853
History
DateUserTypeResult
2025-09-03Harry BruceCERT
PRP Certification
CERT proof power = 6
Proof certified good
2025-09-02KrieselC-PRP
AFEE3B29E0604552
PRP proof power = 6
PRP: Verified (Factored)
Proof certified good
2020-09-07kutensC-PRP
M1779529/5762114903/361751716297473485026173503 : AFEE3B29E0604552
PRP: Verified
PRP without proof (not generated)
2020-09-06fre_gamesC-PRP
M1779529/5762114903/361751716297473485026173503 : AFEE3B29E0604552
PRP: Verified
PRP without proof (not generated)
2020-09-03_p95holder_F-ECM
Factor: 361751716297473485026173503 / (ECM curve 1, B1=50000, B2=5000000)
2017-11-04ATHC-PRP
M1779529/5762114903 : 2031A21A5089C43D
PRP: Verified
PRP without proof (not generated)
2017-10-03Oliver KruseC-PRP
M1779529/5762114903 : 2031A21A5089C43D
PRP: Verified
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12