39 288 653 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 2⁷³

TF target 2⁷²

P-1

B1 =	440000
B2 =	7590000

Status	Date	User	Residue	Shift	Software
Bad	2007-09-13	Greg Stuart	D3016DCD4B61C58D	33897712	Windows,Prime95,v24 final,(aka Wc1)
Verified	2015-01-15	Sir Rutherford J. Pinkerton III	5755D6A5F0498D5C	13390051	Windows 64-bit,Prime95,v28.5,build 2
Verified	2015-05-13	MadPoo 🙂	5755D6A5F0498D5C	30719568	Windows 64-bit,Prime95,v26,(aka We4)

History

Date	User	Type	Result
2024-05-30	LaurV	NF	no factor TF: 68-69
2022-05-21	Sid & Andy	NF	no factor TF: 72-73
2019-07-04	monst	NF	no factor TF: 71-72
2015-05-13	MadPoo 🙂	C-LL	5755D6A5F0498D5C
2015-01-15	Sir Rutherford J. Pinkerton III	C-LL	5755D6A5F0498D5C
2014-12-08	NickOfTime	NF	no factor TF: 70-71
2014-12-02	Bdot	NF	no factor TF: 69-70
2013-09-27	Carsten Kossendey	NF	no factor TF: 68-69
2007-09-13	GuppyBreeder	C-LL	D3016DCD4B61C58D
2007-07-24	GuppyBreeder	NF-PM1	B1=440000, B2=7590000
2006-10-01	-anonymous-	NF	no factor TF: 1-68
2003-10-14	-anonymous-	NF	no factor TF: 1-60
2003-10-08	-anonymous-	NF	no factor TF: 1-60
2003-09-14	-anonymous-	NF	no factor TF: 1-59