76 958 423 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 =	14213750

Status	Date	User	Residue	Shift	Software
Verified	2017-06-30	curtisc	71BE4FAEBBC5C606	10731368	Windows Service,Prime95,v28.7,build 1
Verified	2023-03-25	Reed_Young	71BE4FAEBBC5C606	27397654	Linux 64-bit,Prime95,v30.8,build 18

History

Date	User	Type	Result
2023-03-25	Reed_Young	C-LL	71BE4FAEBBC5C606
2017-06-30	curtisc	C-LL	71BE4FAEBBC5C606
2016-04-03	Mark Rose	NF	no factor TF: 62-64
2016-02-17	Chris Smith	NF	no factor TF: 74-75
2015-04-25	The Mawn	NF-PM1	B1=685000, B2=14213750, E=6
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
2011-04-17	Carsten Kossendey	NF	no factor TF: 67-68
2011-04-17	Carsten Kossendey	NF	no factor TF: 66-67
2010-12-10	Aviatorr	NF	no factor TF: 65-66
2010-11-30	AZMango	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