48 037 183 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 =	540000
B2 =	10260000

Status	Date	User	Residue	Shift	Software
Bad	2009-12-05	Kyle Z Schmidt	C7FDA27CBCF6B6E4	36285439	Windows,Prime95,v25.9,build 4
Verified	2019-06-25	sparnacien	CFEB61EABC06D32B	17487759	Windows 64-bit,Prime95,v27.9,build 1
Verified	2019-07-05	MadPoo 🙂	CFEB61EABC06D32B	11297387	Windows 64-bit,Prime95,v29.8,build 3

History

Date	User	Type	Result
2019-07-05	MadPoo 🙂	C-LL	CFEB61EABC06D32B
2019-06-25	sparnacien	C-LL	CFEB61EABC06D32B
2017-12-09	Mark Rose	NF	no factor TF: 72-73
2015-11-20	-anonymous-	NF	no factor TF: 71-72
2015-10-12	Architects Cubed	NF	no factor TF: 70-71
2015-08-05	LaurV	NF	no factor TF: 69-70
2009-12-05	Kyle Z Schmidt	C-LL	C7FDA27CBCF6B6E4
2009-04-16	Kyle Z Schmidt	NF-PM1	B1=540000, B2=10260000
2008-04-24	precius1	NF	no factor TF: 1-69
2003-10-08	Thomas Mullen	NF	no factor TF: 1-60
2003-06-09	Thomas Mullen	NF	no factor TF: 1-59