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
26787353
Composite: proven not-prime with Lucas-Lehmer test
No factors below 274
TF target 270
P-1
B1 = 2000000
B2 = 1295197530
LL
StatusDateUserResidueShiftSoftware
Verified2008-01-15Manfred Schuster64AE34EBC59DD5AA13942226Windows,Prime95,v24 final,(aka Wc1)
Verified2012-06-18Dubslow64AE34EBC59DD5AA0CUDALucas v2.04 Beta
History
DateUserTypeResult
2025-04-14timc995NF-PM1B1=2000000, B2=1295197530
2021-06-05-anonymous-NFno factor TF: 73-74
2021-05-25Sid & AndyNFno factor TF: 72-73
2021-05-25Sid & AndyNFno factor TF: 71-72
2021-05-18mikrNFno factor TF: 70-71
2017-04-11ramgeisNFno factor TF: 69-70
2012-06-18DubslowC-LL64AE34EBC59DD5AA
2012-06-07Serge BatalovNFno factor TF: 68-69
2012-06-07Serge BatalovNFno factor TF: 67-68
2008-01-15-anonymous-C-LL64AE34EBC59DD5AA
2006-03-01blackivoryNF-PM1B1=410000
2004-09-16-anonymous-NFno factor TF: 1-67
2004-07-02markrNFno factor TF: 1-62