49 896 199 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 2⁷³

P-1

B1 =	600000
B2 =	18150000

Status	Date	User	Residue	Shift	Software
Verified	2010-11-29	Eledill	C346003083491941	21047579	Windows,Prime95,v25.9,build 4
Verified	2020-01-11	Dubslow	C346003083491941	30417288	Linux 64-bit,Prime95,v29.8,build 6

History

Date	User	Type	Result
2020-01-11	Dubslow	C-LL	C346003083491941
2019-12-03	Sid & Andy	NF	no factor TF: 74-75
2019-07-10	-anonymous-	NF	no factor TF: 73-74
2018-01-14	Mark Rose	NF	no factor TF: 72-73
2016-02-23	Mark Rose	NF	no factor TF: 56-63
2015-12-04	-anonymous-	NF	no factor TF: 71-72
2015-09-24	Greg	NF	no factor TF: 70-71
2015-06-08	LaurV	NF	no factor TF: 69-70
2010-11-29	Eledill	C-LL	C346003083491941
2009-04-08	Adel El-Atawy	NF	no factor TF: 68-69
2009-04-06	Adel El-Atawy	NF	no factor TF: 67-68
2009-01-12	TheJudger	NF-PM1	B1=600000, B2=18150000
2008-12-31	Roman Maznichenko	NF	no factor TF: 66-67
2008-12-31	Roman Maznichenko	NF	no factor TF: 65-66
2008-12-30	Roman Maznichenko	NF	no factor TF: 64-65
2008-12-29	hosungpark	NF	no factor TF: 63-64
2000-12-14	-anonymous-	NF	no factor TF: 1-56
2000-09-29	Joss	NF	no factor TF: 1-54