2 631 919 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 2⁷⁰

TF target 2⁶³

Factored

Factor	Digits	Bits	Date
735264942487515057439	21	69.3	2014-04-14 13:53:12

ECM

Digits	B1	Curves
25	50000	207 / 280

Estimated T-Level: 23.7 ⓘ

TF below 2^74 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Software
Factored		Charles Gallo	AC82E9B7215E9CDA	0	Windows,Prime95,v14,(aka WQ1)
Factored		Marlene Menard	AC82E9B7215E9CDA	0	Windows,Prime95,v13,(aka WP1)
Factored	1999-04-13	Eric Strand	AC82E9B7215E9CDA	950134	Windows,Prime95,v18,(aka WU1)

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-10-17	Oliver Kruse	B4DCE0AC152EA5D2	1	2512155	5	3
Verified	PRP without proof (not generated)	2017-12-02	storm5510	B4DCE0AC152EA5D2	1	2503216	5	3

History

Date	User	Type	Result
2022-03-11	LordJulius	NF	no factor TF: 1-60
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-12-02	storm5510	C-PRP	M2631919/735264942487515057439 : B4DCE0AC152EA5D2
2017-10-17	Oliver Kruse	C-PRP	M2631919/735264942487515057439 : B4DCE0AC152EA5D2
2014-04-14	Never Odd Or Even	F	Factor: 735264942487515057439 / TF: 69-70
2014-03-08	Never Odd Or Even	NF	no factor TF: 69-70
2014-03-08	Never Odd Or Even	NF	no factor TF: 68-69
2014-03-08	Never Odd Or Even	NF	no factor TF: 66-67
2014-03-08	Never Odd Or Even	NF	no factor TF: 67-68
2014-03-08	Never Odd Or Even	NF	no factor TF: 65-66
2013-09-04	David Campeau	NF	no factor TF: 64-65
2012-06-06	lycorn	NF	no factor TF: 61-64
2011-01-17	James Heinrich	NF-PM1	B1=180000, B2=4275000, E=6
2009-06-20	USAFSS	NF-PM1	B1=30000, B2=420000
2009-01-31	Sturle Sunde	NF	no factor TF: 60-61
2003-10-31	-anonymous-	NF-PM1	B1=2048, B2=204800
1999-04-13	estrand	C-LL	AC82E9B7215E9CDA
1999-03-26	estrand	NF	no factor TF: 1-59