75 072 407 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 =	655000
B2 =	13100000

Status	Date	User	Residue	Shift	Software
Verified	2015-10-18	curtisc	E4EE65F7B31E33AE	4912788	Windows Service,Prime95,v28.5,build 2
Verified	2025-02-02	Dmitriy Degtiarev	E4EE65F7B31E33AE	62319745	Linux 64-bit,Prime95,v30.3,build 6

History

Date	User	Type	Result
2025-02-02	Dmitriy Degtiarev	C-LL	E4EE65F7B31E33AE
2015-10-18	curtisc	C-LL	E4EE65F7B31E33AE
2015-09-08	James Heinrich	NF-PM1	B1=655000, B2=13100000, E=6
2015-08-29	Bdot	NF	no factor TF: 74-75
2015-08-25	endless_mike	NF	no factor TF: 73-74
2015-08-25	endless_mike	NF	no factor TF: 72-73
2015-08-25	endless_mike	NF	no factor TF: 71-72
2014-08-03	arnaud	NF	no factor TF: 70-71
2014-02-20	conan7123	NF	no factor TF: 69-70
2010-08-10	Bold_Seeker	NF	no factor TF: 68-69
2010-08-09	tmorrow	NF	no factor TF: 67-68
2010-08-06	vasanth	NF	no factor TF: 66-67
2010-08-04	Nurpuri	NF	no factor TF: 65-66
2004-12-23	Marzbug	NF	no factor TF: 1-65
2004-07-02	Marzbug	NF	no factor TF: 1-65