41 463 311 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 =	500000
B2 =	14375000

Status	Date	User	Residue	Shift	Software
Verified	2010-05-15	Reed_Young	EA5D2AD500D1DFC2	40035977	Linux 64-bit,Prime95,v25.9,build 4
Verified	2017-08-06	greg7618	EA5D2AD500D1DFC2	16823353	Mac OS X 64-bit,Prime95,v28.7,build 1

History

Date	User	Type	Result
2022-05-12	RichD0	NF	no factor TF: 72-73
2017-08-06	greg7618	C-LL	EA5D2AD500D1DFC2
2015-09-12	AirSquirrels	NF	no factor TF: 71-72
2015-01-28	srow7	NF	no factor TF: 70-71
2015-01-26	LaurV	NF	no factor TF: 69-70
2014-02-13	LaurV	NF	no factor TF: 68-69
2010-05-15	Reed_Young	C-LL	EA5D2AD500D1DFC2
2009-11-18	MCAS	NF-PM1	B1=500000, B2=14375000
2007-03-20	precius1	NF	no factor TF: 1-68