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
42038207TF
No factors below 273
TF target 272
P-1
B1 = 1000000
B2 = 25000000
LL
StatusDateUserResidueShift
Verified2010-03-06ahmeraliE7156FF6E664CA3B21055531
Verified2016-02-19-Anonymous-E7156FF6E664CA3B36205121
History
DateUserTypeResult
2020-03-27Sid & AndyNF
no factor from 2^72 to 2^73
2019-02-24Dylan DelgadoNF-PM1
B1=1000000, B2=25000000, E=12
2016-02-19-Anonymous-C-LL
E7156FF6E664CA3B
2015-08-26-Anonymous-NF
no factor from 2^71 to 2^72
2015-02-26Mark RoseNF
no factor from 2^70 to 2^71
2015-01-15Mark RoseNF
no factor from 2^69 to 2^70
2010-03-06ahmeraliC-LL
E7156FF6E664CA3B
2010-01-02ahmeraliNF-PM1
B1=380000, B2=1900000
2009-12-31ahmeraliNF
no factor to 2^69