77 589 637 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 =	720000
B2 =	14580000

Status	Date	User	Residue	Shift	Software
Verified	2016-09-16	-anonymous-	C77E139B1E452C44	70648064	Windows,Prime95,v28.7,build 1
Verified	2025-05-23	confusedCoyote	C77E139B1E452C44	16026169	Windows 64-bit,Prime95,v29.8,build 6

History

Date	User	Type	Result
2025-05-23	confusedCoyote	C-LL	C77E139B1E452C44
2016-09-16	-anonymous-	C-LL	C77E139B1E452C44
2016-04-04	Mark Rose	NF	no factor TF: 53-64
2016-02-08	dh1	NF	no factor TF: 74-75
2015-05-02	Nesowa	NF-PM1	B1=720000, B2=14580000, E=6
2015-04-19	Sid & Andy	NF	no factor TF: 73-74
2014-01-07	planetclown	NF	no factor TF: 72-73
2014-01-07	planetclown	NF	no factor TF: 71-72
2011-03-20	Ungelovende	NF	no factor TF: 70-71
2011-03-20	Ungelovende	NF	no factor TF: 69-70
2011-03-19	Ungelovende	NF	no factor TF: 68-69
2011-01-16	-anonymous-	NF	no factor TF: 67-68
2011-01-16	-anonymous-	NF	no factor TF: 66-67
2010-10-13	-anonymous-	NF	no factor TF: 65-66
2010-10-13	Per Jessen	NF	no factor TF: 64-65
2000-08-17	-anonymous-	NF	no factor TF: 1-53