44 726 953 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 =	540000
B2 =	15930000

Status	Date	User	Residue	Shift	Software
Bad	2010-09-01	The Magic Forest	B47C1DA9676B9E51	888653	Windows 64-bit,Prime95,v25.9,build 4
Verified	2010-12-10	curtisc	277789DE149ED45E	22911395	Windows Service,Prime95,v25.11,build 2
Verified	2016-09-23	Mark Rose	277789DE149ED45E	691561	Linux 64-bit,Prime95,v28.9,build 2

History

Date	User	Type	Result
2024-06-20	James Heinrich	NF	no factor TF: 69-70
2019-11-21	Sid & Andy	NF	no factor TF: 73-74
2018-08-08	-anonymous-	NF	no factor TF: 72-73
2016-09-23	Mark Rose	C-LL	277789DE149ED45E
2015-08-19	Sid & Andy	NF	no factor TF: 71-72
2015-08-09	Mark Rose	NF	no factor TF: 70-71
2015-07-30	Carsten Kossendey	NF	no factor TF: 69-70
2014-07-06	VictordeHollander	NF	no factor TF: 68-69
2010-12-10	curtisc	C-LL	277789DE149ED45E
2010-09-01	The Magic Forest	C-LL	B47C1DA9676B9E51
2010-02-23	MCAS	NF-PM1	B1=540000, B2=15930000
2007-10-29	-anonymous-	NF	no factor TF: 1-68