34 381 771 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 2⁷¹

P-1

B1 =	375000
B2 =	6468750

Status	Date	User	Residue	Shift	Software
Verified	2005-03-20	Michel Weinachter	376405AA23DE00EA	16558915	Windows,Prime95,v23,(aka WZ1)
Verified	2015-05-25	Dubslow	376405AA23DE00EA	29043455	Linux 64-bit,Prime95,v28.6,build 1

History

Date	User	Type	Result
2020-02-28	-anonymous-	NF	no factor TF: 73-74
2019-11-22	-anonymous-	NF	no factor TF: 71-72
2019-11-22	-anonymous-	NF	no factor TF: 72-73
2015-05-25	Dubslow	C-LL	376405AA23DE00EA
2014-02-10	kdgehman	NF	no factor TF: 70-71
2014-02-10	kdgehman	NF	no factor TF: 69-70
2013-07-25	Le Comte	NF	no factor TF: 68-69
2005-03-20	Michel Weinachter	C-LL	376405AA23DE00EA
2005-02-02	Michel Weinachter	NF	no factor TF: 1-68
2005-02-02	Michel Weinachter	NF-PM1	B1=375000, B2=6468750
2004-09-02	oerwin	NF	no factor TF: 1-62