76 958 209 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 =	685000
B2 =	10617500

Status	Date	User	Residue	Shift	Software
Verified	2017-07-01	Brian Beuning	0E8787552B6F8551	47195519	Linux 64-bit,Prime95,v28.7,build 1
Verified	2023-02-07	Reed_Young	0E8787552B6F8551	6949600	Linux 64-bit,Prime95,v30.8,build 18

History

Date	User	Type	Result
2023-02-07	Reed_Young	C-LL	0E8787552B6F8551
2017-07-01	Brian Beuning	C-LL	0E8787552B6F8551
2016-04-03	Mark Rose	NF	no factor TF: 62-64
2016-02-13	Chris Smith	NF	no factor TF: 74-75
2015-04-30	guru	NF-PM1	B1=685000, B2=10617500
2015-04-19	Chuck	NF	no factor TF: 73-74
2011-12-02	DRH	NF	no factor TF: 72-73
2011-12-02	DRH	NF	no factor TF: 71-72
2011-12-02	DRH	NF	no factor TF: 70-71
2011-12-02	DRH	NF	no factor TF: 69-70
2011-12-02	DRH	NF	no factor TF: 68-69
2011-04-05	Carsten Kossendey	NF	no factor TF: 67-68
2011-04-05	Carsten Kossendey	NF	no factor TF: 66-67
2010-11-24	Gnorfe	NF	no factor TF: 65-66
2010-11-24	Gnorfe	NF	no factor TF: 64-65
2004-06-12	markr	NF	no factor TF: 1-62
2000-08-10	-anonymous-	NF	no factor TF: 1-53