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
68708953
Composite: proven not-prime with Lucas-Lehmer test
No factors below 275
TF target 274
P-1
B1 = 625000
B2 = 12812500
LL
StatusDateUserResidueShiftSoftware
Verified2016-07-19kdgehman6C94C7AA2D5A7D6B32083702Windows 64-bit,Prime95,v27.3,build 1
Verified2023-02-16Reed_Young6C94C7AA2D5A7D6B27145891Linux 64-bit,Prime95,v26.6,build 3
History
DateUserTypeResult
2023-02-16Reed_YoungC-LL6C94C7AA2D5A7D6B
2016-07-19kdgehmanC-LL6C94C7AA2D5A7D6B
2016-03-22monstNFno factor TF: 74-75
2014-10-12TheJudgerNF-PM1B1=625000, B2=12812500, E=12
2014-10-09Mark RoseNFno factor TF: 73-74
2014-10-07garoNFno factor TF: 72-73
2014-08-08RichD0NFno factor TF: 71-72
2012-11-08ITSNFno factor TF: 70-71
2012-03-12dslNFno factor TF: 69-70
2010-02-06curtiscNFno factor TF: 68-69
2010-02-01GrunwalderGIMPNFno factor TF: 67-68
2010-01-31Sturle SundeNFno factor TF: 66-67
2010-01-29-anonymous-NFno factor TF: 65-66
2010-01-29chargerNFno factor TF: 64-65
2008-10-21-anonymous-NFno factor TF: 1-64
2004-07-13mdrgNFno factor TF: 1-61
2004-03-08mdrgNFno factor TF: 1-60