Marin Mersenne 2^P-1
Username
Password
Forgot password?
Blue
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
2453483Factored
FactorDigitsBitsDate
489474003981248981141184826392995.32020-09-07 18:51:35
ECM
DigitsB1Curves
255000077 / 280
Estimated T-Level: 21.4 ⓘ
TF below 2^66 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Jan Nygard05370A6F5FFD1E040
Verified (Factored)Sturle Sunde05370A6F5FFD1E040
Verified (Factored)2015-11-14MadPoo05370A6F5FFD1E041795403
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2020-09-08xyuzyzCD5EE9A0C0B8A9101103397053
Verified2020-09-09krackerCD5EE9A0C0B8A9101141653853
History
DateUserTypeResult
2020-09-09Ben DeloCERT
PRP Certification
Proof certified good
2020-09-09krackerC-PRP
M2453483/48947400398124898114118482639 : CD5EE9A0C0B8A910
PRP proof power = 7
PRP: Verified
Proof certified good
2020-09-08xyuzyzC-PRP
M2453483/48947400398124898114118482639 : CD5EE9A0C0B8A910
PRP: Verified
PRP without proof (not generated)
2020-09-07MarkSF-ECM
Factor: 48947400398124898114118482639 / (ECM curve 5, B1=50000, B2=5000000, Sigma=3957510469865597)
2019-07-17TJAOINF
no factor from 2^67 to 2^68
2017-07-14Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^59 to 2^60
2015-11-14MadPooC-LL
05370A6F5FFD1E04
2015-10-25ramgeisNF
no factor from 2^65 to 2^66
2015-03-03VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-03VictordeHollanderNF
no factor from 2^63 to 2^64
2014-02-09mikrNF-PM1
B1=3102822, B2=43439508, E=12
2013-12-04Jerry HallettNF
no factor from 2^62 to 2^63
2012-06-07Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-19Oscar ÖstlinNF-PM1
B1=95000, B2=1947500, E=6
2010-12-22JossNF-PM1
B1=20000
2009-01-15Sturle SundeNF
no factor from 2^60 to 2^61