69 748 577 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 =	16560000

Status	Date	User	Residue	Shift	Software
Verified	2016-02-16	Ryan Propper	BB77E232E679C45B	67041733	Linux 64-bit,Prime95,v28.5,build 2
Verified	2024-09-12	R Giltrap	BB77E232E679C45B	55349031	Linux 64-bit,Prime95,v30.19,build 15
Verified	2025-02-28	Sergey Nosov	BB77E232E679C45B	11402341	Windows Service,Prime95,v28.6,build 1

History

Date	User	Type	Result
2025-02-28	Sergey Nosov	C-LL	BB77E232E679C45B
2024-09-12	R Giltrap	C-LL	BB77E232E679C45B
2016-03-31	Mark Rose	NF	no factor TF: 64-65
2016-03-30	Mark Rose	NF	no factor TF: 62-64
2016-02-16	Ryan Propper	C-LL	BB77E232E679C45B
2015-07-05	TheJudger	NF	no factor TF: 74-75
2014-06-13	brilong	NF	no factor TF: 73-74
2014-06-03	Jerry Hallett	NF	no factor TF: 72-73
2014-03-24	Nesowa	NF-PM1	B1=720000, B2=16560000, E=6
2014-03-15	garo	NF	no factor TF: 71-72
2013-06-25	JoDu	NF	no factor TF: 70-71
2012-04-01	Simon Harrison	NF	no factor TF: 69-70
2010-03-07	arnaud	NF	no factor TF: 68-69
2010-02-27	Team_Elteor_Borislavj~Bronco	NF	no factor TF: 67-68
2010-02-23	-anonymous-	NF	no factor TF: 66-67
2010-02-15	pal1	NF	no factor TF: 65-66
2003-10-23	-anonymous-	NF	no factor TF: 1-62
2001-01-08	Joss	NF	no factor TF: 1-56
2000-10-28	Joss	NF	no factor TF: 1-54