7 569 043 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 2⁶⁷

Factored

Factor	Digits	Bits	Date
566976963541648730143	21	68.9	2020-06-05 09:34:25

ECM

Digits	B1	Curves
25	50000	6 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Software
Factored	1999-06-26	Bjørn Roger Larsen	9F35D36D7F8D48D3	1202602	Windows,Prime95,v18,(aka WU1)
Factored	2002-03-10	Burt Bregman	9F35D36D7F8D48D3	1666295	Windows,Prime95,v21,(aka WX1)

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2020-06-08	M Miller	02CEC388C2A9847D	1	7204868	5	3
Verified	PRP without proof (not generated)	2020-06-09	Luigi Morelli	02CEC388C2A9847D	1	2186895	5	3

History

Date	User	Type	Result
2025-10-20	Sid & Andy	NF-PM1	B1=2500000, B2=3943416750
2025-06-18	Greg	F	Factor: 566976963541648730143 / TF: 68-70
2020-06-09	Luigi Morelli	C-PRP	M7569043/566976963541648730143 : 02CEC388C2A9847D
2020-06-08	M Miller	C-PRP	M7569043/566976963541648730143 : 02CEC388C2A9847D
2020-06-05	chuenkit	F	Factor: 566976963541648730143 / TF: 68-69*
2018-07-31	ramgeis	NF	no factor TF: 67-68
2016-09-27	Gordon Spence	NF	no factor TF: 66-67
2015-06-09	VictordeHollander	NF	no factor TF: 65-66
2013-12-01	David Campeau	NF	no factor TF: 64-65
2013-10-18	Nesowa	NF	no factor TF: 63-64
2012-05-09	James Heinrich	NF-PM1	B1=145000, B2=3153750, E=6
2002-03-10	-anonymous-	C-LL	9F35D36D7F8D48D3
2002-02-17	-anonymous-	NF-PM1	B1=35000, B2=393750
1999-06-26	-anonymous-	C-LL	9F35D36D7F8D48D3
1999-03-01	-anonymous-	NF	no factor TF: 1-63
1998-07-29	-anonymous-	NF	no factor TF: 1-61