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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
1848923Factored
FactorDigitsBitsDate
3697847721.8old
3056790740324415611858.12015-08-07 11:40:53
19840515494991796469311032580.72021-06-11 13:32:19
59592434184386875914741532582.32020-07-08 19:16:59
ECM
DigitsB1Curves
2550000280 / 280
30250000107 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-10-04Oliver KruseB34303F37B5C8F232013
Verified (Factored)2017-11-07kkmrkkblmbrbkB34303F37B5C8F232173579113
Verified (Factored)2020-07-08ATH73D76E551260E7FE3106161953
Verified (Factored)2020-07-13Yves Bellefeuille73D76E551260E7FE313108853
Verified2021-06-12ZacHFX73D76E551260E7FE4116564153
History
DateUserTypeResult
2022-08-28USAFSSNF-PM1
B1=400000, B2=431631816
2022-04-12Lisander ViaeneNF-PM1
B1=500100
2021-06-12Simon JosefssonCERT
PRP Certification
Proof certified good
2021-06-12ZacHFXC-PRP
M1848923/3697847/305679074032441561/5959243418438687591474153/1984051549499179646931103 : 73D76E551260E7FE
PRP proof power = 7
PRP: Verified
Proof certified good
2021-06-11TJAOIF-ECM
Factor: 1984051549499179646931103 / (ECM curve 106, B1=50000, B2=6600000)
2020-07-13Yves BellefeuilleC-PRP
M1848923/3697847/305679074032441561/5959243418438687591474153 : 73D76E551260E7FE
PRP: Verified (Factored)
PRP without proof (not generated)
2020-07-08ATHC-PRP
M1848923/3697847/305679074032441561/5959243418438687591474153 : 73D76E551260E7FE
PRP: Verified (Factored)
PRP without proof (not generated)
2020-07-08_p95holder_F-ECM
Factor: 5959243418438687591474153 / (ECM curve 2, B1=50000, B2=5000000)
2017-11-07kkmrkkblmbrbkC-PRP
M1848923/3697847/305679074032441561 : B34303F37B5C8F23
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-04Oliver KruseC-PRP
M1848923/3697847/305679074032441561 : B34303F37B5C8F23
PRP: Verified (Factored)
PRP without proof (not generated)
2015-08-07TJAOIF
Factor: 305679074032441561 / TF: 58-59