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
51881183Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 274
TF target 273
P-1
B1 = 500000
B2 = 9000000
LL
StatusDateUserResidueShift
Verified2014-01-19ANONYMOUS253DE068D36F64EE13610113
Verified2019-11-06Ryan Propper253DE068D36F64EE41980118
History
DateUserTypeResult
2019-11-06Ryan PropperC-LL
253DE068D36F64EE
2019-07-01-Anonymous-NF
no factor from 2^73 to 2^74
2016-02-23Mark RoseNF
no factor from 2^60 to 2^63
2016-01-13AirSquirrelsNF
no factor from 2^72 to 2^73
2014-01-19ANONYMOUSC-LL
253DE068D36F64EE
2011-12-17Sid & AndyNF-PM1
B1=500000, B2=9000000
2011-12-04megavinkNF
no factor from 2^71 to 2^72
2011-11-28GregNF
no factor from 2^70 to 2^71
2011-11-08Ethan O'ConnorNF
no factor from 2^69 to 2^70
2010-03-20Mike McCurdyNF
no factor from 2^68 to 2^69
2009-08-17Sturle SundeNF
no factor from 2^67 to 2^68
2008-12-22James HeinrichNF
no factor from 2^66 to 2^67
2008-12-19James HeinrichNF
no factor from 2^65 to 2^66
2008-12-11James HeinrichNF
no factor from 2^64 to 2^65
2008-12-04PatutiNF
no factor from 2^63 to 2^64