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
4999537Factored
FactorDigitsBitsDate
1816899653168714513722092477.32021-10-21 17:42:04
ECM
DigitsB1Curves
25500009 / 280
Estimated T-Level: 20.2
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Mike Giroux2DF8B131A8611F2A0
Verified (Factored)2000-04-12Stephan Grupp2DF8B131A8611F2A3344393
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2021-10-28kutens21641E946B413C3F196700753
P-1 factors
DateFactorB1B2
2021-10-21181689965316871451372209500000002500000000
History
DateUserTypeResult
2021-10-29C.D.B.CERT
PRP Certification
Proof certified good
2021-10-28kutensC-PRP
M4999537/181689965316871451372209 : 21641E946B413C3F
PRP proof power = 7
PRP: Verified
Proof certified good
2021-10-21timbitF-PM1
Factor: 181689965316871451372209 / (P-1, B1=50000000, B2=2500000000, E=12)
2021-04-27-Anonymous-NF
no factor from 2^71 to 2^72
2021-04-24-Anonymous-NF
no factor from 2^70 to 2^71
2021-01-07YxinityNF
no factor from 2^69 to 2^70
2020-12-28TJAOINF
no factor from 2^68 to 2^69
2020-05-19timbitNF-PM1
B1=5000000, B2=250000000, E=12
2018-06-05ramgeisNF
no factor from 2^67 to 2^68
2017-05-13YxinityNF
no factor from 2^66 to 2^67
2017-02-08Squeeky_SquirrelNF-PM1
B1=300000, B2=9375000, E=12
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-07-31snme2pm1NF
no factor from 2^65 to 2^66
2014-11-06lycornNF
no factor from 2^64 to 2^65
2014-11-06lycornNF
no factor from 2^63 to 2^64
2011-12-09Squeeky_SquirrelNF-PM1
B1=120000, B2=2430000, E=6
2011-08-27GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-07-10Squeeky_SquirrelNF-PM1
B1=60000, B2=990000, E=6
2009-09-16Carsten KossendeyNF-PM1
B1=25000, B2=362500
2008-09-02Sturle SundeNF
no factor from 2^61 to 2^62