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:





MnDetails
1060867
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 271
TF target 260
Factored
FactorDigitsBitsDate
37373516943565435479630472581.62017-12-01 13:36:51
ECM
DigitsB1Curves
2550000280 / 280
3025000099 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShiftSoftware
FactoredPhil Nesser02A3B625171089D00Windows,Prime95,v11,(aka WC)
FactoredThe Grebelius Family02A3B625171089D00Windows,Prime95,v14,(aka WQ1)
FactoredCornelius Caesar02A3B625171089D00Mac,John Sweeney,v1.4,(aka J3)
Factored2015-11-11MadPoo 🙂02A3B625171089D0138999Windows 64-bit,Prime95,v26,(aka We4)
PRP
StatusProofDateUserResidueShiftTypeBase
Factored
Certified Good
Power=6
2025-09-01KrieselFC53B66BDF0CB782013
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors
ShiftTypeBase
Verified
PRP without proof (not generated)
2017-12-02kkmrkkblmbrbkFC53B66BDF0CB782113503253
Verified
PRP without proof (not generated)
2017-12-02storm5510FC53B66BDF0CB782189965253
History
DateUserTypeResult
2025-09-01RareSaturnCERT
Proof certified good
2025-09-01KrieselC-PRPFC53B66BDF0CB782
Proof Certified Good

Proof Power: 6

2017-12-02storm5510C-PRPM1060867/3737351694356543547963047 : FC53B66BDF0CB782
2017-12-02kkmrkkblmbrbkC-PRPM1060867/3737351694356543547963047 : FC53B66BDF0CB782
2017-12-01TJAOIF-ECMFactor: 3737351694356543547963047
2016-05-21Bruno VictalNF-PM1B1=2500000, B2=62500000, E=12
2016-04-02JossNF-PM1B1=1080930
2016-03-23JossNF-PM1B1=900775
2016-02-23Mark RoseNFno factor TF: 58-60
2015-11-11MadPoo 🙂C-LL02A3B625171089D0
2015-10-16Bruno VictalNF-PM1B1=500000, B2=15000000, E=12
2014-10-22JossNF-PM1B1=321002
2014-08-07JossNF-PM1B1=260501
2014-04-01Never Odd Or EvenNFno factor TF: 70-71
2013-12-10Never Odd Or EvenNFno factor TF: 69-70
2013-12-10Never Odd Or EvenNFno factor TF: 68-69
2013-12-10Never Odd Or EvenNFno factor TF: 67-68
2013-12-10Never Odd Or EvenNFno factor TF: 66-67
2013-12-10Never Odd Or EvenNFno factor TF: 65-66
2013-12-10Never Odd Or EvenNFno factor TF: 64-65
2013-12-10Never Odd Or EvenNFno factor TF: 63-64
2012-10-07dbaughNFno factor TF: 62-63
2012-01-31bcp19NF-PM1B1=200000, B2=100000000, E=12
2011-12-31bcp19NF-PM1B1=200000, B2=10000000, E=12
2010-11-12Michael CNFno factor TF: 61-62
2009-02-14Sturle SundeNFno factor TF: 60-61
2003-04-03-anonymous-NFno factor TF: 1-58
2002-01-28JossNF-PM1B1=100, B2=1000
2001-11-17-anonymous-NFno factor TF: 1-57