5 104 513 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
2866333819331443711	19	61.3	2008-12-30 01:13:26

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	1998-07-11	Chris Martin	0838AD102625CB6B	0	Windows,Prime95,v16,NT service,(aka WS5)
Factored	2000-08-24	Tomek Malarz	0838AD102625CB6B	2075911	Windows,Prime95,v20,(aka WW1)

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-09-20	kkmrkkblmbrbk	E2E92279FE8047D7	1	0	1	3
Verified	PRP without proof (not generated)	2018-05-06	storm5510	E2E92279FE8047D7	1	444050	1	3

History

Date	User	Type	Result
2025-02-22	Sid & Andy	NF-PM1	B1=3600000, B2=9023744730
2025-01-27	Sid & Andy	NF	no factor TF: 68-70
2023-05-11	This -Anonymous-	NF-PM1	B1=100000, B2=2000000, E=6
2023-04-18	Kevin_9611	NF-PM1	B1=330000, B2=214566240
2018-05-06	storm5510	C-PRP	M5104513/2866333819331443711 : E2E92279FE8047D7
2017-09-20	kkmrkkblmbrbk	C-PRP	M5104513/2866333819331443711 : E2E92279FE8047D7
2008-12-30	Sturle Sunde	F	Factor: 2866333819331443711
2000-08-24	-anonymous-	C-LL	0838AD102625CB6B
2000-08-01	-anonymous-	NF-PM1	B1=25000, B2=237500
1998-07-11	-anonymous-	C-LL	0838AD102625CB6B
1998-05-16	-anonymous-	NF	no factor TF: 1-61