2 274 931 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
3497614568298638839	19	61.6	2012-05-06 15:48:08

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	165 / 640

Estimated T-Level: 26.3 ⓘ

TF below 2^82 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Software
Factored		John Lloyd	6FF7D2A04AA7C288	0	Windows,Prime95,v14,(aka WQ1)
Factored		Wayne Scott	6FF7D2A04AA7C288	0	Linux 32-bit,Prime95,v14,(aka WQ2)
Factored	1999-04-23	Goede Schueler/Christoph Steinbeck	6FF7D2A04AA7C288	2214838	Windows,Prime95,v17,NT service,(aka WT5)

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-10-11	Oliver Kruse	BC2E92F9CB5C94AB	1	0	1	3
Verified	PRP without proof (not generated)	2017-11-21	storm5510	BC2E92F9CB5C94AB	1	1698801	1	3

History

Date	User	Type	Result
2017-11-21	storm5510	C-PRP	M2274931/3497614568298638839 : BC2E92F9CB5C94AB
2017-10-11	Oliver Kruse	C-PRP	M2274931/3497614568298638839 : BC2E92F9CB5C94AB
2016-05-02	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2012-05-06	Sebastian Hornbostel	F-ECM	Factor: 3497614568298638839
2011-01-01	markr	NF-PM1	B1=105000, B2=2152500, E=6
2010-11-14	Joss	NF-PM1	B1=30000
2010-11-06	Joss	NF-PM1	B1=15000
2009-01-14	Sturle Sunde	NF	no factor TF: 60-61
2003-04-27	-anonymous-	NF-PM1	B1=2048, B2=204800, E=12
1999-04-23	-anonymous-	C-LL	6FF7D2A04AA7C288