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:










MnStatusDetails
42285703TF
No factors below 273
TF target 272
P-1
B1 = 380000
B2 = 1900000
LL
StatusDateUserResidueShift
Verified2011-11-13stigmvB2B20B77F6E7E0874269068
Verified2018-01-17P_B_MCLB2B20B77F6E7E08717498861
History
DateUserTypeResult
2022-04-13RichD0NF
no factor from 2^72 to 2^73
2018-01-17P_B_MCLC-LL
B2B20B77F6E7E087
2015-09-13AirSquirrelsNF
no factor from 2^71 to 2^72
2015-03-15Mark RoseNF
no factor from 2^70 to 2^71
2015-01-22Andrew BNF
no factor from 2^69 to 2^70
2011-11-13stigmvC-LL
B2B20B77F6E7E087
2009-12-14ahmeraliNF-PM1
B1=380000, B2=1900000