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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
4329239Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
372755165039359679095212375.02019-06-06 05:13:45
ECM
DigitsB1Curves
255000010 / 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)1998-03-31Marc HoneyD005FB9FE5DE0DBA0
Verified (Factored)2000-02-23David LintonD005FB9FE5DE0DBA3205752
Verified (Factored)2000-03-15Michael CollierD005FB9FE5DE0DBA3358578
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2019-06-10vnatin817F71412EC6073E153254353
Verified2019-06-10ATH817F71412EC6073E124608353
History
DateUserTypeResult
2024-12-31James HeinrichNF-PM1
B1=710000, B2=2898999180
2019-06-10ATHC-PRP
M4329239/37275516503935967909521 : 817F71412EC6073E
PRP: Verified
PRP without proof (not generated)
2019-06-10vnatinC-PRP
M4329239/37275516503935967909521 : 817F71412EC6073E
PRP: Verified
PRP without proof (not generated)
2019-06-06furkellF-ECM
Factor: 37275516503935967909521 / (ECM curve 1, B1=50000, B2=5000000)
2018-10-24chuenkitNF
no factor from 2^67 to 2^68
2018-04-30chuenkitNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-01-22Squeeky_SquirrelNF-PM1
B1=150000, B2=3637500, E=6
2015-06-16snme2pm1NF
no factor from 2^65 to 2^66
2014-06-05lycornNF
no factor from 2^64 to 2^65
2014-06-04JayderNF
no factor from 2^63 to 2^64
2012-01-14GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-12-16Squeeky_SquirrelNF-PM1
B1=80000, B2=1440000, E=6
2010-12-02markrNF
no factor from 2^61 to 2^62
2009-09-01Carsten KossendeyNF-PM1
B1=25000, B2=343750