5 087 501 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 2⁶⁵

Factored

Factor	Digits	Bits	Date
5998028981010948743	19	62.4	2009-07-27 03:15:36

ECM

Digits	B1	Curves
25	50000	3 / 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	1998-06-28	Jan Otto Munch Pedersen	B25B7C5D47192DF6	0	Windows,Prime95,v16,(aka WS1)
Factored	2000-05-05	CPI	B25B7C5D47192DF6	3152801	Windows,Prime95,v19,(aka WV1)

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-09-20	kkmrkkblmbrbk	E028A0F48EB6CB8B	1	0	1	3
Verified	PRP without proof (not generated)	2018-05-02	storm5510	E028A0F48EB6CB8B	1	2037335	1	3

History

Date	User	Type	Result
2025-01-22	Sid & Andy	NF	no factor TF: 68-70
2025-01-20	Sid & Andy	NF-PM1	B1=3600000, B2=9023744730
2023-05-11	This -Anonymous-	NF-PM1	B1=50000, B2=1000000
2018-05-02	storm5510	C-PRP	M5087501/5998028981010948743 : E028A0F48EB6CB8B
2017-09-20	kkmrkkblmbrbk	C-PRP	M5087501/5998028981010948743 : E028A0F48EB6CB8B
2009-07-27	GrunwalderGIMP	F-ECM	Factor: 5998028981010948743
2008-12-29	Sturle Sunde	NF	no factor TF: 61-62
2000-05-05	-anonymous-	C-LL	B25B7C5D47192DF6
1998-06-28	-anonymous-	C-LL	B25B7C5D47192DF6
1998-05-16	-anonymous-	NF	no factor TF: 1-61