66 155 267 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 2⁷⁷

TF target 2⁷⁴

P-1

B1 =	640000
B2 =	13600000

Status	Date	User	Residue	Shift	Software
Verified	2015-03-03	Kyle Z Schmidt	DDD30D779BECEEDD	10525434	Windows 64-bit,Prime95,v28.5,build 2
Verified	2023-12-03	Section 31	DDD30D779BECEEDD	54710001	Linux 64-bit,Prime95,v30.8,build 18

History

Date	User	Type	Result
2024-05-26	ANONYMOUS	NF	no factor TF: 69-70
2023-12-03	Section 31	C-LL	DDD30D779BECEEDD
2023-11-17	OnkelMersenne	NF	no factor TF: 76-77
2023-11-03	Magallan3s	NF	no factor TF: 75-76
2015-03-03	Kyle Z Schmidt	C-LL	DDD30D779BECEEDD
2015-02-04	Chuck	NF	no factor TF: 74-75
2014-06-08	TheJudger	NF	no factor TF: 73-74
2014-03-30	TheJudger	NF-PM1	B1=640000, B2=13600000, E=12
2014-03-18	gcardona	NF	no factor TF: 72-73
2014-03-09	Phantomas	NF	no factor TF: 71-72
2013-05-02	SMoffat	NF	no factor TF: 70-71
2012-02-12	Richard	NF	no factor TF: 69-70
2010-02-06	MRodezno	NF	no factor TF: 68-69
2010-01-30	Chrispy Bongo	NF	no factor TF: 67-68
2010-01-24	Chrispy Bongo	NF	no factor TF: 66-67
2010-01-15	Nathan Edington	NF	no factor TF: 65-66
2009-03-27	-anonymous-	NF	no factor TF: 64-65
2009-03-02	1997rj7	NF	no factor TF: 1-64
2004-02-14	Team Prime Rib	NF	no factor TF: 1-60