48 341 663 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 =	1000000
B2 =	20000000

Status	Date	User	Residue	Shift	Software
Bad	2010-09-26	Chris Sherbak	F6923FA1BC128F37	43052498	Windows,Prime95,v25.11,build 2
Verified	2016-12-03	rudimeier	76786FB586C1AD1B	30045125	Linux 64-bit,Prime95,v28.9,build 2
Verified	2016-12-10	ATH	76786FB586C1AD1B	43352634	Windows 64-bit,Prime95,v28.9,build 2

History

Date	User	Type	Result
2018-12-17	Sid & Andy	NF-PM1	B1=1000000, B2=20000000, E=12
2017-12-31	Sid & Andy	NF	no factor TF: 72-73
2016-12-10	ATH	C-LL	76786FB586C1AD1B
2016-12-03	rudimeier	C-LL	76786FB586C1AD1B
2015-12-04	-anonymous-	NF	no factor TF: 71-72
2015-09-17	LaurV	NF	no factor TF: 70-71
2015-08-31	-anonymous-	NF	no factor TF: 69-70
2010-09-26	Chris Sherbak	C-LL	F6923FA1BC128F37
2010-07-15	Chris Sherbak	NF-PM1	B1=760000
2008-05-10	-anonymous-	NF	no factor TF: 1-69
2008-04-24	Wojciech Florek	NF	no factor TF: 1-64
2008-03-03	1997rj7	NF	no factor TF: 1-63
2003-06-06	Thomas Mullen	NF	no factor TF: 1-59