85 991 077 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 2⁷⁶

TF target 2⁷⁵

P-1

B1 =	720000
B2 =	14040000

Status	Date	User	Residue	Shift	Software
Verified	2019-10-02	proxy2222	D14550DCF2FD78C3	38525781	Windows 64-bit,Prime95,v26,(aka We4)
Verified	2021-10-08	Alathesia	D14550DCF2FD78C3	50010981	Windows 64-bit,Prime95,v29.4,build 8

History

Date	User	Type	Result
2021-10-08	Alathesia	C-LL	D14550DCF2FD78C3
2019-10-02	proxy2222	C-LL	D14550DCF2FD78C3
2017-04-17	Architects Cubed	NF-PM1	B1=720000, B2=14040000, E=6
2017-04-16	Sid & Andy	NF	no factor TF: 74-75
2017-04-16	Sid & Andy	NF	no factor TF: 75-76
2017-04-16	Sid & Andy	NF	no factor TF: 73-74
2017-03-20	Strolling Jellyfish	NF	no factor TF: 72-73
2014-01-17	Preben S	NF	no factor TF: 71-72
2013-11-10	SMoffat	NF	no factor TF: 70-71
2013-03-14	kagakubu	NF	no factor TF: 69-70
2013-03-10	Allan Manangan	NF	no factor TF: 68-69
2013-03-08	Gnorfe	NF	no factor TF: 67-68
2013-03-08	Gnorfe	NF	no factor TF: 66-67
2013-02-27	saffa	NF	no factor TF: 65-66
2010-12-25	Architects Cubed	NF	no factor TF: 64-65