27 942 151 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 2⁷³

TF target 2⁷⁰

P-1

B1 =	610000
B2 =	12200000

Status	Date	User	Residue	Shift	Software
Verified	2007-07-24	Ars Technica Team Prime Rib	AF29D6DF753C2B63	13901183	Windows,Prime95,v24 final,(aka Wc1)
Verified	2011-09-16	Dubslow	AF29D6DF753C2B63	13833897	Windows 64-bit,Prime95,v26.6,build 3

History

Date	User	Type	Result
2021-06-23	Architects Cubed	NF-PM1	B1=610000, B2=12200000
2021-06-05	LaurV	NF	no factor TF: 72-73
2021-06-04	LaurV	NF	no factor TF: 71-72
2021-04-04	mikr	NF	no factor TF: 70-71
2018-03-17	Yxinity	NF	no factor TF: 69-70
2018-03-17	Yxinity	NF	no factor TF: 68-69
2011-09-16	Dubslow	C-LL	AF29D6DF753C2B63
2011-08-30	Carsten Kossendey	NF	no factor TF: 67-68
2007-07-24	Team Prime Rib	C-LL	AF29D6DF753C2B63
2007-07-04	Team Prime Rib	NF-PM1	B1=440000
2005-05-12	ITS	NF	no factor TF: 1-67
2004-08-20	-anonymous-	NF	no factor TF: 1-62
2001-08-24	Net_Force	NF	no factor TF: 1-56