80 000 681 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 =	900000
B2 =	24750000

Status	Date	User	Residue	Shift	Software
Verified	2016-11-13	electron1897	10B8B3135ACE8BF5	29252437	Windows 64-bit,Prime95,v28.9,build 2
Verified	2024-12-12	semicolonTransistor	10B8B3135ACE8BF5	5376963	Linux 64-bit,Prime95,v30.19,build 20

History

Date	User	Type	Result
2024-12-12	semicolonTransistor	C-LL	10B8B3135ACE8BF5
2024-08-09	cramsey87	NF	no factor TF: 75-76
2016-11-13	electron1897	C-LL	10B8B3135ACE8BF5
2016-08-02	Sid & Andy	NF	no factor TF: 74-75
2015-10-29	mikr	NF	no factor TF: 73-74
2015-10-29	mikr	NF	no factor TF: 72-73
2015-04-20	sasaki	NF	no factor TF: 71-72
2010-12-13	eon_blue_apocalypse	NF	no factor TF: 70-71
2010-10-26	timbit	NF-PM1	B1=900000, B2=24750000
2009-05-01	unconnected	NF	no factor TF: 69-70
2009-04-12	unconnected	NF	no factor TF: 68-69
2009-04-04	timbit	NF	no factor TF: 67-68
2009-03-29	timbit	NF	no factor TF: 66-67