77 140 157 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 =	665000
B2 =	12468750

Status	Date	User	Residue	Shift	Software
Verified	2016-04-24	-anonymous-	0ED4A665BBD848FA	19564720	Windows,Prime95,v28.5,build 2
Verified	2025-05-21	hadi_lts_25	0ED4A665BBD848FA	30822997	Windows 64-bit,Prime95,v30.19,build 20

History

Date	User	Type	Result
2025-05-21	hadi_lts_25	C-LL	0ED4A665BBD848FA
2016-04-24	-anonymous-	C-LL	0ED4A665BBD848FA
2015-05-25	ixfd64	NF-PM1	B1=665000, B2=12468750
2015-05-19	NickOfTime	NF	no factor TF: 74-75
2015-05-19	NickOfTime	NF	no factor TF: 73-74
2015-05-19	NickOfTime	NF	no factor TF: 72-73
2015-05-19	NickOfTime	NF	no factor TF: 71-72
2012-12-31	Houd Al-Obaidli	NF	no factor TF: 70-71
2011-01-03	wallu	NF	no factor TF: 69-70
2011-01-02	wallu	NF	no factor TF: 68-69
2011-01-01	Zet_kor	NF	no factor TF: 67-68
2010-12-19	Bisis	NF	no factor TF: 66-67
2010-12-13	Christian Geschwentner	NF	no factor TF: 65-66
2008-08-04	-anonymous-	NF	no factor TF: 1-65
2003-12-02	-anonymous-	NF	no factor TF: 1-61
2000-08-10	-anonymous-	NF	no factor TF: 1-53