27 971 329 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 2⁷⁴

TF target 2⁷⁰

P-1

B1 =	602000
B2 =	32879000

Status	Date	User	Residue	Shift	Software
Verified	2005-04-02	Kelly Fergason	E276C3F6C912A8F5	4789788	Linux 32-bit,Prime95,v23,(aka WZ2)
Verified	2011-09-23	Dubslow	E276C3F6C912A8F5	0	CUDALucas v1.2

History

Date	User	Type	Result
2021-06-25	-anonymous-	NF	no factor TF: 73-74
2021-06-23	Architects Cubed	NF-PM1	B1=602000, B2=32879000
2021-06-07	Sid & Andy	NF	no factor TF: 72-73
2021-06-07	Sid & Andy	NF	no factor TF: 71-72
2021-04-06	mikr	NF	no factor TF: 70-71
2017-12-23	Yxinity	NF	no factor TF: 69-70
2017-12-23	Yxinity	NF	no factor TF: 68-69
2011-09-23	Dubslow	C-LL	E276C3F6C912A8F5
2011-07-01	Carsten Kossendey	NF	no factor TF: 67-68
2005-04-02	-anonymous-	C-LL	E276C3F6C912A8F5
2005-02-23	-anonymous-	NF-PM1	B1=435000
2004-12-13	-anonymous-	NF	no factor TF: 1-67
2004-09-02	-anonymous-	NF	no factor TF: 1-62
2001-08-24	Net_Force	NF	no factor TF: 1-56