39 308 671 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

TF

No factors below 2⁷⁵

TF target 2⁷²

P-1

B1 =	370000
B2 =	1942500

Status	Date	User	Residue	Shift
Verified	2008-09-16	Paul Derbyshire	A40421AE2D64FE59	30526053
Verified	2017-01-31	dh1	A40421AE2D64FE59	14390247

History

Date	User	Type	Result
2020-12-20	-Anonymous-	NF	no factor from 2^74 to 2^75
2020-02-14	-Anonymous-	NF	no factor from 2^73 to 2^74
2019-10-13	-Anonymous-	NF	no factor from 2^72 to 2^73
2019-07-26	monst	NF	no factor from 2^71 to 2^72
2017-01-31	dh1	C-LL	A40421AE2D64FE59
2016-02-23	Mark Rose	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^65 to 2^66
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^64
2016-02-23	Mark Rose	NF	no factor from 2^67 to 2^68
2016-02-23	Mark Rose	NF	no factor from 2^64 to 2^65
2016-02-23	Mark Rose	NF	no factor from 2^60 to 2^61
2014-12-09	srow7	NF	no factor from 2^70 to 2^71
2014-12-02	Mark Rose	NF	no factor from 2^69 to 2^70
2013-09-27	Carsten Kossendey	NF	no factor from 2^68 to 2^69