Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
49817423Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
427128970095248929013872012685.12019-09-17 22:15:51
LL
StatusDateUserResidueShift
Verified (Factored)2011-03-22forrest-lumpkin07A4B957745245D929395503
Verified (Factored)2019-03-07Smok_bmv 07A4B957745245D93105862
P-1 factors
DateFactorB1B2
2019-09-1742712897009524892901387201100000020000000
History
DateUserTypeResult
2019-09-17Sid & AndyF-PM1
Factor: 42712897009524892901387201 / (P-1, B1=1000000, B2=20000000, E=12)
2019-07-02-Anonymous-NF
no factor from 2^73 to 2^74
2019-03-07Smok_bmv C-LL
07A4B957745245D9
2018-01-30monstNF
no factor from 2^72 to 2^73
2015-12-06-Anonymous-NF
no factor from 2^71 to 2^72
2015-06-14LaurVNF
no factor from 2^70 to 2^71
2015-06-12LaurVNF
no factor from 2^69 to 2^70
2011-03-22forrest-lumpkinC-LL
07A4B957745245D9
2010-12-26forrest-lumpkinNF-PM1
B1=780000