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
42279269
Composite: proven not-prime with Lucas-Lehmer test
No factors below 273
TF target 272
P-1
B1 = 710000
B2 = 710000
LL
StatusDateUserResidueShiftSoftware
Bad2008-08-07C. Cooper / S. Boone3B1F197AA45F9DDB4381436Windows,Prime95,v24 final,NT service,(aka Wc5)
Verified2015-08-01Architects CubedDE186292866E1E4314575293Linux 64-bit,Prime95,v27.9,build 1
Verified2016-09-09Mark RoseDE186292866E1E438511658Linux 64-bit,Prime95,v28.9,build 2
History
DateUserTypeResult
2018-08-12-anonymous-NFno factor TF: 72-73
2016-09-09Mark RoseC-LLDE186292866E1E43
2015-08-01Architects CubedC-LLDE186292866E1E43
2015-07-27GregNFno factor TF: 71-72
2015-03-19Mark RoseNFno factor TF: 70-71
2015-01-23chalsallNFno factor TF: 69-70
2014-01-05Torben K.NFno factor TF: 68-69
2008-08-07curtiscC-LL3B1F197AA45F9DDB
2008-06-22curtiscNF-PM1B1=710000
2007-10-17JC_HerlesNFno factor TF: 1-68