86 000 357 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 2⁷⁷

TF target 2⁷⁵

P-1

B1 =	985000
B2 =	27580000

Status	Date	User	Residue	Shift	Software
Verified	2018-11-30	John Airey	87C1391763D54CDE	78351905	Linux 64-bit,Prime95,v28.5,build 2
Verified	2025-02-11	Taikelenn	87C1391763D54CDE	0	Linux64,GpuOwl,v7.5

History

Date	User	Type	Result
2025-02-11	Taikelenn	C-LL	87C1391763D54CDE
2020-08-14	mikr	NF	no factor TF: 76-77
2018-11-30	John Airey	C-LL	87C1391763D54CDE
2017-03-15	Sid & Andy	NF	no factor TF: 75-76
2017-03-08	vats09	NF	no factor TF: 74-75
2017-03-08	vats09	NF	no factor TF: 72-73
2017-03-08	vats09	NF	no factor TF: 73-74
2014-07-07	timbit	NF-PM1	B1=985000, B2=27580000
2013-12-04	SWL551	NF	no factor TF: 71-72
2013-12-04	SWL551	NF	no factor TF: 70-71
2013-11-12	Robish	NF	no factor TF: 69-70
2013-10-28	SMoffat	NF	no factor TF: 68-69
2013-10-25	SMoffat	NF	no factor TF: 67-68
2011-02-07	Michael C	NF	no factor TF: 66-67
2010-11-21	Michael C	NF	no factor TF: 65-66
2010-10-24	Michael C	NF	no factor TF: 64-65
2010-10-24	-anonymous-	NF	no factor TF: 64-65