71 548 313 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 2⁷⁵

TF target 2⁷⁴

P-1

B1 =	660000
B2 =	14025000

Status	Date	User	Residue	Shift	Software
Verified	2015-09-20	Kyle Z Schmidt	D88E91955E59EA7D	70410597	Windows 64-bit,Prime95,v28.5,build 2
Verified	2024-09-13	lozcs	D88E91955E59EA7D	40469066	Windows Service,Prime95,v29.8,build 6

History

Date	User	Type	Result
2024-09-13	lozcs	C-LL	D88E91955E59EA7D
2015-09-20	Kyle Z Schmidt	C-LL	D88E91955E59EA7D
2015-04-19	megavink	NF	no factor TF: 74-75
2015-03-15	TheJudger	NF-PM1	B1=660000, B2=14025000, E=12
2015-03-08	Random GPUs	NF	no factor TF: 73-74
2015-02-18	infinigon	NF	no factor TF: 72-73
2014-12-29	RichD0	NF	no factor TF: 71-72
2013-07-24	willmore	NF	no factor TF: 70-71
2013-04-24	Lukin Dmitry	NF	no factor TF: 69-70
2010-07-30	Dr. Nowak	NF	no factor TF: 68-69
2010-07-23	Dr. Nowak	NF	no factor TF: 67-68
2010-07-16	Dr. Nowak	NF	no factor TF: 66-67
2010-07-09	Dr. Nowak	NF	no factor TF: 65-66
2010-07-02	Dr. Nowak	NF	no factor TF: 64-65
2008-10-20	Wojciech Florek	NF	no factor TF: 1-64