26 137 921 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷³

TF target 2⁷⁰

P-1

B1 =	310000
B2 =	7440000

Status	Date	User	Residue	Shift	Software
Verified	2005-12-12	Daniel R. Blair	07B194D38984DE9E	2500980	FreeBSD 32-bit,Prime95,v23,(aka WZ6)
Verified	2012-07-10	Dubslow	07B194D38984DE9E	0	CUDALucas v2.04 Beta

History

Date	User	Type	Result
2021-01-09	-anonymous-	NF	no factor TF: 72-73
2021-01-09	-anonymous-	NF	no factor TF: 70-71
2021-01-09	-anonymous-	NF	no factor TF: 71-72
2017-04-02	ramgeis	NF	no factor TF: 69-70
2012-07-10	Dubslow	C-LL	07B194D38984DE9E
2011-12-30	bcp19	NF	no factor TF: 68-69
2011-12-29	Dubslow	NF	no factor TF: 67-68
2005-12-12	Daniel Blair	C-LL	07B194D38984DE9E
2005-10-18	Daniel Blair	NF-PM1	B1=310000, B2=7440000
2004-07-13	LaurV	NF	no factor TF: 1-67