44 977 379 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 2⁷³

TF target 2⁷²

P-1

B1 =	540000
B2 =	13635000

Status	Date	User	Residue	Shift	Software
Verified	2010-10-28	Kyle Z Schmidt	2F712852F9E0CEC3	26532180	Windows 64-bit,Prime95,v25.11,build 2
Verified	2018-05-31	WR	2F712852F9E0CEC3	31452936	Linux 64-bit,Prime95,v28.10,build 1

History

Date	User	Type	Result
2024-06-25	Greg	NF	no factor TF: 71-72
2024-06-25	Greg	NF	no factor TF: 70-71
2018-05-31	WR	C-LL	2F712852F9E0CEC3
2018-03-04	Kevin Jaget	NF	no factor TF: 72-73
2015-11-06	-anonymous-	NF	no factor TF: 71-72
2015-11-06	-anonymous-	NF	no factor TF: 70-71
2015-06-28	caddr	NF	no factor TF: 69-70
2014-07-15	VictordeHollander	NF	no factor TF: 68-69
2010-10-28	Kyle Z Schmidt	C-LL	2F712852F9E0CEC3
2009-07-11	-anonymous-	NF-PM1	B1=540000, B2=13635000
2007-12-03	-anonymous-	NF	no factor TF: 1-68