2 477 851 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 2⁶³

Factored

Factor	Digits	Bits	Date
4315285848844473983	19	61.9	2012-06-04 22:42:28

ECM

Digits	B1	Curves
25	50000	270 / 280

Estimated T-Level: 24.8 ⓘ

TF below 2^77 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Software
Factored		Dax Mickelson	F7F5CA04791F56CF	0	Windows,Prime95,v14,(aka WQ1)
Factored	1999-08-16	Jean-Yves Canart	F7F5CA04791F56CF	316035	Windows,Prime95,v18,(aka WU1)

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-10-14	Oliver Kruse	590DF00AA4953084	1	305574	5	3
Verified	PRP without proof (not generated)	2017-11-29	storm5510	590DF00AA4953084	1	1546741	5	3

History

Date	User	Type	Result
2022-03-10	LordJulius	NF	no factor TF: 1-60
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-11-29	storm5510	C-PRP	M2477851/4315285848844473983 : 590DF00AA4953084
2017-10-14	Oliver Kruse	C-PRP	M2477851/4315285848844473983 : 590DF00AA4953084
2012-06-04	Jacques MOLNE	F-ECM	Factor: 4315285848844473983
2011-01-20	Oscar Östlin	NF-PM1	B1=95000, B2=1947500, E=6
2010-11-20	Joss	NF-PM1	B1=20000
2009-01-14	Sturle Sunde	NF	no factor TF: 60-61
2003-10-31	Team Prime Rib	NF-PM1	B1=15000, B2=228750
2003-10-14	-anonymous-	NF-PM1	B1=2048, B2=204800
1999-08-16	JC	C-LL	F7F5CA04791F56CF
1999-05-02	JC	NF	no factor TF: 1-59