70 419 581 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 2⁷⁵

TF target 2⁷⁴

P-1

B1 =	640000
B2 =	13280000

Status	Date	User	Residue	Shift	Software
Verified	2016-07-14	ari.orn	73E97026E93BC4AE	22527995	Windows 64-bit,Prime95,v28.9,build 2
Verified	2024-08-06	Ryan Propper	73E97026E93BC4AE	5844950	Linux 64-bit,Prime95,v30.7,build 9

History

Date	User	Type	Result
2024-08-06	Ryan Propper	C-LL	73E97026E93BC4AE
2016-07-14	ari.orn	C-LL	73E97026E93BC4AE
2016-04-08	-anonymous-	NF	no factor TF: 74-75
2015-01-17	ANONYMOUS	NF-PM1	B1=640000, B2=13280000
2014-10-30	srow7	NF	no factor TF: 73-74
2014-10-29	RichD0	NF	no factor TF: 72-73
2014-09-19	srow7	NF	no factor TF: 71-72
2013-04-09	SMoffat	NF	no factor TF: 70-71
2012-11-02	ANONYMOUS	NF	no factor TF: 1-70
2010-06-08	-anonymous-	NF	no factor TF: 68-69
2010-05-23	charger	NF	no factor TF: 67-68
2010-05-11	majorjameshannah	NF	no factor TF: 66-67
2010-05-08	cnaTb_xo4y	NF	no factor TF: 65-66
2010-05-04	-anonymous-	NF	no factor TF: 64-65
2008-11-22	Wojciech Florek	NF	no factor TF: 1-64
2007-09-13	Amperio	NF	no factor TF: 1-63