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
43826941Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 273
TF target 272
P-1
B1 = 1000000
B2 = 20000000
LL
StatusDateUserResidueShift
Verified2011-08-30petrym39EFED6956D3E0F324792708
Verified2017-09-04Evgeniy Zavialov39EFED6956D3E0F38510458
History
DateUserTypeResult
2018-12-02Sid & AndyNF-PM1
B1=1000000, B2=20000000, E=6
2018-08-06-Anonymous-NF
no factor from 2^72 to 2^73
2017-09-04Evgeniy ZavialovC-LL
39EFED6956D3E0F3
2015-10-09-Anonymous-NF
no factor from 2^71 to 2^72
2015-05-12krackerNF
no factor from 2^70 to 2^71
2015-04-17LaurVNF
no factor from 2^69 to 2^70
2014-01-29LaurVNF
no factor from 2^68 to 2^69
2011-08-30petrymC-LL
39EFED6956D3E0F3
2011-07-31petrymNF-PM1
B1=750000