77 251 289 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 =	655000
B2 =	13100000

Status	Date	User	Residue	Shift	Software
Verified	2015-11-25	ANONYMOUS	334D04A54D3E9C28	22093923	Windows 64-bit,Prime95,v28.6,build 1
Verified	2024-09-20	mewturn	334D04A54D3E9C28	31928687	Linux 64-bit,Prime95,v30.19,build 13

History

Date	User	Type	Result
2024-09-20	mewturn	C-LL	334D04A54D3E9C28
2016-04-03	Mark Rose	NF	no factor TF: 61-64
2015-11-25	ANONYMOUS	C-LL	334D04A54D3E9C28
2015-06-09	Nesowa	NF-PM1	B1=655000, B2=13100000, E=12
2015-06-02	Nesowa	NF	no factor TF: 74-75
2015-05-30	NickOfTime	NF	no factor TF: 73-74
2015-05-30	NickOfTime	NF	no factor TF: 72-73
2015-05-30	NickOfTime	NF	no factor TF: 71-72
2013-01-08	davidb_KS	NF	no factor TF: 70-71
2010-11-25	jrwines	NF	no factor TF: 69-70
2010-11-16	jrwines	NF	no factor TF: 68-69
2010-11-12	GIMP Philippines	NF	no factor TF: 67-68
2010-11-05	Veryssok	NF	no factor TF: 66-67
2010-11-02	Boulder	NF	no factor TF: 65-66
2010-10-20	Boulder	NF	no factor TF: 64-65
2003-12-02	-anonymous-	NF	no factor TF: 1-61
2000-08-17	-anonymous-	NF	no factor TF: 1-53