Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
38308007TF
No factors below 273
TF target 272
P-1
B1 = 205000
B2 = 3946250
LL
StatusDateUserResidueShift
Verified2008-01-15Marcelo Baraldi SperaEC42ADFC94717AEF15551381
Verified2009-01-27ahmeraliEC42ADFC94717AEF10328076
History
DateUserTypeResult
2022-06-24Sid & AndyNF
no factor from 2^72 to 2^73
2018-12-15monstNF
no factor from 2^71 to 2^72
2015-03-20NesowaNF
no factor from 2^70 to 2^71
2014-11-18mikrNF
no factor from 2^69 to 2^70
2010-01-26Carsten KossendeyNF-PM1
B1=205000, B2=3946250, E=6
2009-01-27ahmeraliC-LL
EC42ADFC94717AEF
2008-12-18ahmeraliNF
no factor to 2^69