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
42021883TF
No factors below 273
TF target 272
P-1
B1 = 495000
B2 = 12127500
LL
StatusDateUserResidueShift
Verified2008-07-25Bob Willard75A11E75F914291141023796
Verified2017-09-15Sergey Nosov75A11E75F91429113043245
History
DateUserTypeResult
2020-03-12Sid & AndyNF
no factor from 2^72 to 2^73
2017-09-15Sergey NosovC-LL
75A11E75F9142911
2015-09-14AirSquirrelsNF
no factor from 2^71 to 2^72
2015-02-25Mark RoseNF
no factor from 2^70 to 2^71
2015-01-15chalsallNF
no factor from 2^69 to 2^70
2013-12-29bayanneNF
no factor from 2^68 to 2^69