74 906 551 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 =	620000
B2 =	11625000

Status	Date	User	Residue	Shift	Software
Verified	2016-05-14	Dennis Okon	57378AF7DC247056	176365	Windows 64-bit,Prime95,v28.7,build 1
Verified	2025-01-04	Dmitriy Degtiarev	57378AF7DC247056	49784235	Linux 64-bit,Prime95,v30.3,build 6

History

Date	User	Type	Result
2025-01-04	Dmitriy Degtiarev	C-LL	57378AF7DC247056
2016-05-14	Dennis Okon	C-LL	57378AF7DC247056
2016-04-03	Mark Rose	NF	no factor TF: 61-64
2015-12-28	Jwb52z	NF-PM1	B1=620000, B2=11625000
2015-12-06	TheJudger	NF	no factor TF: 74-75
2015-12-06	TheJudger	NF	no factor TF: 73-74
2015-12-04	Bdot	NF	no factor TF: 72-73
2015-08-27	Judge Hale	NF	no factor TF: 71-72
2014-08-09	PascalBieri	NF	no factor TF: 70-71
2012-11-08	Clown_Royal	NF	no factor TF: 69-70
2010-11-20	sannerud.com	NF	no factor TF: 68-69
2010-11-20	sannerud.com	NF	no factor TF: 67-68
2010-11-20	sannerud.com	NF	no factor TF: 66-67
2010-11-20	sannerud.com	NF	no factor TF: 65-66
2010-07-17	-anonymous-	NF	no factor TF: 64-65
2005-02-12	ramgeis	NF	no factor TF: 1-61
2002-04-20	Joss	NF	no factor TF: 1-57