2 619 857 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
568893273331735959007	21	68.9	2010-06-11 07:29:58

ECM

Digits	B1	Curves
25	50000	188 / 280

Estimated T-Level: 23.4 ⓘ

TF below 2^73 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Software
Factored		Todd Reagan	0D03A1D13225977A	0	Windows,Prime95,v13,(aka WP1)
Factored	1999-06-15	Willem van der Vegt	0D03A1D13225977A	1473103	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	ADCA92751C1E723F	1	2006414	5	3
Verified	PRP without proof (not generated)	2017-12-02	storm5510	ADCA92751C1E723F	1	385958	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	M2619857/568893273331735959007 : ADCA92751C1E723F
2017-10-17	Oliver Kruse	C-PRP	M2619857/568893273331735959007 : ADCA92751C1E723F
2010-06-11	Walt Cooney	F-ECM	Factor: 568893273331735959007
2009-01-31	Sturle Sunde	NF	no factor TF: 60-61
2003-11-08	Team Prime Rib	NF-PM1	B1=15000, B2=217500
2003-10-31	-anonymous-	NF-PM1	B1=2048, B2=204800
1999-06-15	-anonymous-	C-LL	0D03A1D13225977A
1999-03-26	-anonymous-	NF	no factor TF: 1-59