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:





MnDetails
23562031
Composite: proven not-prime with Lucas-Lehmer test
No factors below 273
TF target 270
P-1
B1 = 1200000
B2 = 1392029100
LL
StatusDateUserResidueShiftSoftware
Verified2004-07-02F. David Babcock956BC91FEBF915DA18249992Windows,Prime95,v22,(aka WY1)
Verified2010-03-16Sturle Sunde956BC91FEBF915DA13188000Linux 64-bit,Prime95,v25.7,build 3
History
DateUserTypeResult
2025-12-07ThaNF-PM1B1=1200000, B2=1392029100
2023-01-14Sid & AndyNFno factor TF: 72-73
2021-06-27-anonymous-NFno factor TF: 71-72
2021-06-26-anonymous-NFno factor TF: 70-71
2015-04-28James HeinrichNFno factor TF: 1-70
2010-03-16Sturle SundeC-LL956BC91FEBF915DA
2004-08-04sannerud.comNFno factor TF: 1-67
2004-07-02-anonymous-C-LL956BC91FEBF915DA
2004-05-25-anonymous-NF-PM1B1=275000, B2=6806250
2004-03-08sannerud.comNFno factor TF: 1-67
2004-02-07sannerud.comNFno factor TF: 1-67
2004-01-07sannerud.comNFno factor TF: 1-67
2003-12-13sannerud.comNFno factor TF: 1-67
2003-12-02sannerud.comNFno factor TF: 1-67
2003-07-30-anonymous-NFno factor TF: 1-60
2001-09-10Net_ForceNFno factor TF: 1-56