85 314 181 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 =	685000
B2 =	13357500

Status	Date	User	Residue	Shift	Software
Verified	2018-04-15	-anonymous-	B77D147E2B8879E0	38591649	Windows 64-bit,Prime95,v29.4,build 8
Verified	2026-01-14	querwurzel	B77D147E2B8879E0	4817408	Linux 64-bit,Prime95,v30.19,build 20

History

Date	User	Type	Result
2026-01-14	querwurzel	C-LL	B77D147E2B8879E0
2018-04-15	-anonymous-	C-LL	B77D147E2B8879E0
2018-02-11	TheJudger	NF-PM1	B1=685000, B2=13357500, E=12
2017-09-05	-anonymous-	NF	no factor TF: 74-75
2017-09-05	-anonymous-	NF	no factor TF: 75-76
2017-02-18	-anonymous-	NF	no factor TF: 73-74
2017-02-18	-anonymous-	NF	no factor TF: 71-72
2017-02-18	-anonymous-	NF	no factor TF: 72-73
2014-11-16	shauge	NF	no factor TF: 70-71
2014-09-18	-anonymous-	NF	no factor TF: 69-70
2013-08-14	Robish	NF	no factor TF: 68-69
2013-08-13	Robish	NF	no factor TF: 67-68
2013-06-14	Le Comte	NF	no factor TF: 66-67
2013-02-19	E.Lechner	NF	no factor TF: 65-66
2010-11-25	Architects Cubed	NF	no factor TF: 64-65