27 777 557 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 2⁷⁰

P-1

B1 =	325000
B2 =	6825000

Status	Date	User	Residue	Shift	Software
Verified	2005-03-06	C. Cooper / S. Boone	4EB30C33FADD68AF	8424945	Windows,Prime95,v23,NT service,(aka WZ5)
Verified	2012-04-24	Dubslow	4EB30C33FADD68AF	13070400	Linux 64-bit,Prime95,v27.4,build 1

History

Date	User	Type	Result
2021-10-07	TheJudger	NF	no factor TF: 74-75
2021-09-12	TheJudger	NF	no factor TF: 73-74
2021-08-24	TheJudger	NF	no factor TF: 72-73
2021-08-22	TheJudger	NF	no factor TF: 71-72
2021-03-26	mikr	NF	no factor TF: 70-71
2017-04-02	ramgeis	NF	no factor TF: 69-70
2012-04-24	Dubslow	C-LL	4EB30C33FADD68AF
2012-02-14	megavink	NF	no factor TF: 68-69
2011-07-14	Carsten Kossendey	NF	no factor TF: 67-68
2005-06-19	-anonymous-	NF	no factor TF: 1-67
2005-03-06	curtisc	C-LL	4EB30C33FADD68AF
2005-02-12	curtisc	NF-PM1	B1=325000, B2=6825000
2004-11-30	-anonymous-	NF	no factor TF: 1-67
2004-10-03	1997rj7	NF	no factor TF: 1-62
2001-08-24	Net_Force	NF	no factor TF: 1-56