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

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MnStatusDetails
5061607Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
18221785211030.8old
4325979318935849201532168.62019-10-17 14:05:52
8506389590931282159192169.52025-01-14 22:59:42
ECM
DigitsB1Curves
25500002 / 280
Estimated T-Level: 20.0
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-20kkmrkkblmbrbk1275251D59DEF26D1013
Verified (Factored)2018-04-29trebor1275251D59DEF26D1368670413
Verified (Factored)2019-10-18mnd928C177A44519FDA32338548353
Verified (Factored)2019-10-18ATH28C177A44519FDA32285621653
Verified2025-01-21dnova28C177A44519FDA33469430053
P-1 factors
DateFactorB1B2
2025-01-1585063895909312821591951000006828360000
History
DateUserTypeResult
2025-01-21Michael PawellekCERT
PRP Certification
Proof certified good
2025-01-21dnovaC-PRP
M5061607/1822178521/432597931893584920153/850638959093128215919 : 28C177A44519FDA3
PRP proof power = 7
PRP: Verified
Proof certified good
2025-01-15Sid & AndyF-PM1
Factor: 850638959093128215919 / (P-1, B1=5100000, B2=6828360000)
2025-01-14Sid & AndyF
Factors: 432597931893584920153,850638959093128215919 / TF: 68-70
2023-05-11This -Anonymous-NF-PM1
B1=50000, B2=1000000
2019-10-18ATHC-PRP
M5061607/1822178521/432597931893584920153 : 28C177A44519FDA3
PRP: Verified (Factored)
PRP without proof (not generated)
2019-10-18mnd9C-PRP
M5061607/1822178521/432597931893584920153 : 28C177A44519FDA3
PRP: Verified (Factored)
PRP without proof (not generated)
2019-10-17_p95holder_F-ECM
Factor: 432597931893584920153 / (ECM curve 2, B1=50000, B2=5000000)
2018-04-29treborC-PRP
M5061607/1822178521 : 1275251D59DEF26D
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M5061607/1822178521 : 1275251D59DEF26D
PRP: Verified (Factored)
PRP without proof (not generated)