2 273 273 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶²

Factored

Factor	Digits	Bits	Date
6580697893273695671	19	62.5	2013-01-23 08:17:46

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	129 / 640

Estimated T-Level: 26.0 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Software
Factored		John Lloyd	514C6771FA37A0BA	0	Windows,Prime95,v14,(aka WQ1)
Factored		Wayne Scott	514C6771FA37A0BA	0	Linux 32-bit,Prime95,v14,(aka WQ2)
Factored	1999-04-02	Clayton Smith	514C6771FA37A0BA	1476967	Windows,Prime95,v17,(aka WT1)

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-10-11	Oliver Kruse	E6DD0A220621E23D	1	0	1	3
Verified	PRP without proof (not generated)	2017-11-21	storm5510	E6DD0A220621E23D	1	1438916	1	3

History

Date	User	Type	Result
2017-11-21	storm5510	C-PRP	M2273273/6580697893273695671 : E6DD0A220621E23D
2017-10-11	Oliver Kruse	C-PRP	M2273273/6580697893273695671 : E6DD0A220621E23D
2016-04-30	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2013-01-23	dbaugh	F	Factor: 6580697893273695671
2012-05-06	Sebastian Hornbostel	NF	no factor TF: 61-62
2011-01-02	markr	NF-PM1	B1=105000, B2=2152500, E=6
2010-11-13	Joss	NF-PM1	B1=30000
2010-11-06	Joss	NF-PM1	B1=15000
2009-01-10	Sturle Sunde	NF	no factor TF: 60-61
2003-04-27	-anonymous-	NF-PM1	B1=2048, B2=204800, E=12
1999-04-02	argilo	C-LL	514C6771FA37A0BA