75 544 669 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 =	11315000

Status	Date	User	Residue	Shift	Software
Verified	2017-09-06	Grant McCracken	9D25437983EECDF1	50081998	Windows 64-bit,Prime95,v29.1,build 14
Verified	2025-01-27	RobertKazan	9D25437983EECDF1	10486380	Windows 64-bit,Prime95,v30.8,build 17

History

Date	User	Type	Result
2025-01-27	RobertKazan	C-LL	9D25437983EECDF1
2017-09-06	Grant McCracken	C-LL	9D25437983EECDF1
2016-03-11	Smok_bmv	NF-PM1	B1=620000, B2=11315000
2016-02-21	TheJudger	NF	no factor TF: 74-75
2016-02-21	TheJudger	NF	no factor TF: 73-74
2016-02-13	Judge Hale	NF	no factor TF: 72-73
2015-09-17	el grocco	NF	no factor TF: 71-72
2013-10-30	arnaud	NF	no factor TF: 70-71
2013-05-21	HMV	NF	no factor TF: 69-70
2010-10-08	Torchwood Institute	NF	no factor TF: 68-69
2010-08-03	Aare Vesi	NF	no factor TF: 67-68
2010-08-01	PrimeCruncher	NF	no factor TF: 66-67
2010-07-30	PrimeCruncher	NF	no factor TF: 65-66
2004-07-13	Marzbug	NF	no factor TF: 1-65
2004-01-27	Marzbug	NF	no factor TF: 1-63