68 076 139 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 =	710000
B2 =	16685000

Status	Date	User	Residue	Shift	Software
Verified	2015-12-20	Kyle Z Schmidt	B2F1B92D4115884E	45899763	Windows 64-bit,Prime95,v28.5,build 2
Verified	2023-06-13	Ryan Propper	B2F1B92D4115884E	29909357	Linux 64-bit,Prime95,v30.7,build 9

History

Date	User	Type	Result
2024-06-01	LaurV	NF	no factor TF: 70-71
2023-06-13	Ryan Propper	C-LL	B2F1B92D4115884E
2016-03-29	Mark Rose	NF	no factor TF: 53-63
2015-12-20	Kyle Z Schmidt	C-LL	B2F1B92D4115884E
2015-11-22	Chuck	NF	no factor TF: 74-75
2014-07-15	Tim Sorbera	NF	no factor TF: 73-74
2014-07-12	Bdot	NF	no factor TF: 72-73
2014-06-29	TheJudger	NF-PM1	B1=710000, B2=16685000, E=12
2014-05-07	RichD0	NF	no factor TF: 71-72
2013-10-11	Carsten Kossendey	NF	no factor TF: 70-71
2012-03-05	qwertyuio999	NF	no factor TF: 69-70
2010-06-09	DRH	NF	no factor TF: 68-69
2010-06-06	sannerud.com	NF	no factor TF: 67-68
2010-05-19	Geoff Wing	NF	no factor TF: 66-67
2010-01-10	bzm	NF	no factor TF: 65-66
2009-04-10	Bob	NF	no factor TF: 64-65
2008-11-02	kmd	NF	no factor TF: 63-64
2000-09-29	Joss	NF	no factor TF: 1-53