44 778 887 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 =	480000
B2 =	4800000

Status	Date	User	Residue	Shift	Software
Bad	2009-08-29	Craig Meyers	A7B927A1777F487B	622370	Windows,Prime95,v25.9,build 4
Verified	2010-08-11	stunnedmullet	EF4E61D593750BDA	7272019	Windows 64-bit,Prime95,v25.9,build 4
Verified	2016-09-22	Mark Rose	EF4E61D593750BDA	31884567	Linux 64-bit,Prime95,v28.9,build 2

History

Date	User	Type	Result
2024-06-20	James Heinrich	NF	no factor TF: 69-70
2019-11-15	Sid & Andy	NF	no factor TF: 73-74
2018-08-05	-anonymous-	NF	no factor TF: 72-73
2016-09-22	Mark Rose	C-LL	EF4E61D593750BDA
2015-08-09	Greg	NF	no factor TF: 70-72
2015-08-04	Carsten Kossendey	NF	no factor TF: 69-70
2014-07-07	NR	NF	no factor TF: 68-69
2010-08-11	stunnedmullet	C-LL	EF4E61D593750BDA
2009-08-29	Craig Meyers	C-LL	A7B927A1777F487B
2009-08-27	Craig Meyers	NF-PM1	B1=480000, B2=4800000
2007-11-17	-anonymous-	NF	no factor TF: 1-68