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
42454169
Composite: proven not-prime with Lucas-Lehmer test
No factors below 274
TF target 272
P-1
B1 = 405000
B2 = 3240000
LL
StatusDateUserResidueShiftSoftware
Verified2008-05-11Ahmer Ali5E28ADCEE818D89D14976838Windows,Prime95,v23,NT service,(aka WZ5)
Verified2017-11-05Dubslow5E28ADCEE818D89D34428640Linux 64-bit,Prime95,v28.7,build 1
History
DateUserTypeResult
2022-04-10TheJudgerNFno factor TF: 73-74
2022-04-10TheJudgerNFno factor TF: 72-73
2017-11-05DubslowC-LL5E28ADCEE818D89D
2015-08-27-anonymous-NFno factor TF: 71-72
2015-03-08NickOfTimeNFno factor TF: 70-71
2015-02-09Andrew BNFno factor TF: 69-70
2008-05-10ahmeraliC-LL5E28ADCEE818D89D
2008-03-22ahmeraliNF-PM1B1=405000, B2=3240000
2008-03-22ahmeraliNFno factor TF: 1-69
2007-06-15Team Prime RibNFno factor TF: 1-68