69 967 421 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	2016-06-16	J. Gareth "Kit" Moreton	CC4D864C5422FF1E	43781457	Windows 64-bit,Prime95,v28.9,build 2
Verified	2024-07-21	Wydzial_Matematyki_PWr	CC4D864C5422FF1E	2415692	Windows,Prime95,v29.8,build 6

History

Date	User	Type	Result
2024-07-21	Wydzial_Matematyki_PWr	C-LL	CC4D864C5422FF1E
2024-06-11	James Heinrich	NF	no factor TF: 70-71
2016-06-16	J. Gareth "Kit" Moreton	C-LL	CC4D864C5422FF1E
2016-04-29	gcardona	NF	no factor TF: 74-75
2016-04-01	Mark Rose	NF	no factor TF: 62-64
2016-04-01	Mark Rose	NF	no factor TF: 64-65
2014-04-19	Nesowa	NF-PM1	B1=640000, B2=13280000, E=12
2014-04-15	Nesowa	NF	no factor TF: 73-74
2014-03-25	Chuck	NF	no factor TF: 72-73
2014-03-25	Chuck	NF	no factor TF: 71-72
2014-01-09	Carsten Kossendey	NF	no factor TF: 70-71
2013-05-07	symallad	NF	no factor TF: 69-70
2010-05-13	wurkfur	NF	no factor TF: 68-69
2010-04-23	wurkfur	NF	no factor TF: 67-68
2010-04-22	Patrik Johansson	NF	no factor TF: 66-67
2010-02-15	Wolfgang Fluck	NF	no factor TF: 65-66
2003-10-23	-anonymous-	NF	no factor TF: 1-62
2000-09-15	Joss	NF	no factor TF: 1-56