44 757 269 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 2⁷⁴

TF target 2⁷²

P-1

B1 =	1000000
B2 =	20000000

Status	Date	User	Residue	Shift	Software
Bad	2009-07-20	curtisc	8F0159656012A601	1097408	Windows Service,Prime95,v25.8,build 1
Verified	2009-10-01	WileECoyote	507D291E4B7828EE	35226878	Windows,Prime95,v25.7,build 3
Verified	2016-10-07	Mark Rose	507D291E4B7828EE	37257248	Linux 64-bit,Prime95,v28.9,build 2

History

Date	User	Type	Result
2024-06-20	James Heinrich	NF	no factor TF: 69-70
2019-11-19	Sid & Andy	NF	no factor TF: 73-74
2019-08-22	Sid & Andy	NF-PM1	B1=1000000, B2=20000000, E=6
2018-08-07	-anonymous-	NF	no factor TF: 72-73
2016-10-07	Mark Rose	C-LL	507D291E4B7828EE
2016-06-27	Adam Buran	NF	no factor TF: 6-60
2015-08-09	Greg	NF	no factor TF: 70-72
2015-07-30	Carsten Kossendey	NF	no factor TF: 69-70
2014-07-11	VictordeHollander	NF	no factor TF: 68-69
2009-10-01	WileECoyote	C-LL	507D291E4B7828EE
2009-07-20	curtisc	C-LL	8F0159656012A601
2009-04-25	curtisc	NF-PM1	B1=755000
2007-11-17	-anonymous-	NF	no factor TF: 1-68