41 934 437 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 =	485000
B2 =	9215000

Status	Date	User	Residue	Shift	Software
Verified	2009-07-22	Kyle Z Schmidt	7E65973E49C58ED9	35827160	Windows,Prime95,v24 final,(aka Wc1)
Verified	2016-06-04	-anonymous-	7E65973E49C58ED9	20776453	Windows 64-bit,Prime95,v28.7,build 1

History

Date	User	Type	Result
2020-01-24	-anonymous-	NF	no factor TF: 73-74
2019-10-04	-anonymous-	NF	no factor TF: 72-73
2016-06-04	-anonymous-	C-LL	7E65973E49C58ED9
2015-09-29	AirSquirrels	NF	no factor TF: 71-72
2015-02-25	Mark Rose	NF	no factor TF: 70-71
2015-01-11	LaurV	NF	no factor TF: 69-70
2014-02-28	LaurV	NF	no factor TF: 68-69
2009-07-22	Kyle Z Schmidt	C-LL	7E65973E49C58ED9
2009-06-08	Kyle Z Schmidt	NF-PM1	B1=485000, B2=9215000
2008-03-03	EPF	NF	no factor TF: 1-68