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
1745143Factored
FactorDigitsBitsDate
12983863931030.3old
20826955396331340.92008-07-15 07:46:02
274274974779983528409672374.52020-06-19 18:54:06
ECM
DigitsB1Curves
2550000280 / 280
30250000106 / 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)2017-09-30alpertronB6CA9981C5C1F4E92013
Verified (Factored)2017-10-19Oliver KruseB6CA9981C5C1F4E9273155713
Verified2020-06-21fre_games377B9F2991DB20133105649953
Verified2020-06-23Luigi Morelli377B9F2991DB20133100443953
History
DateUserTypeResult
2020-06-23Luigi MorelliC-PRP
M1745143/1298386393/2082695539633/27427497477998352840967 : 377B9F2991DB2013
PRP: Verified
PRP without proof (not generated)
2020-06-21fre_gamesC-PRP
M1745143/1298386393/2082695539633/27427497477998352840967 : 377B9F2991DB2013
PRP: Verified
PRP without proof (not generated)
2020-06-19nordiF-ECM
Factor: 27427497477998352840967 / (ECM curve 16, B1=50000, B2=5000000, Sigma=6627687997690515)
2017-10-19Oliver KruseC-PRP
M1745143/1298386393/2082695539633 : B6CA9981C5C1F4E9
PRP: Verified
PRP without proof (not generated)
2017-09-30alpertronC-PRP
M1745143/1298386393/2082695539633 : B6CA9981C5C1F4E9
PRP: Verified
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=500000, B2=15000000, E=12
2008-07-15J FeitsmaF
Factor: 2082695539633