5 505 989 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 2⁶⁶

Factored

Factor	Digits	Bits	Date
11156719981502275841	20	63.3	2008-11-02 06:17:09

Status	Date	User	Residue	Shift	Software
Factored	1999-11-10	Eric Hahn	7B9308E8E2E28AB3	1010289	Windows,Prime95,v18,(aka WU1)
Factored	2000-08-31	Nayan Hajratwala	7B9308E8E2E28AB3	1605625	Windows,Prime95,v19,(aka WV1)

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-12-04	kkmrkkblmbrbk	C358569A2A89849A	1	2893809	5	3
Verified	PRP without proof (not generated)	2018-07-01	storm5510	C358569A2A89849A	1	3671124	5	3

History

Date	User	Type	Result
2025-05-09	Sid & Andy	NF	no factor TF: 68-70
2021-09-23	Dylan Delgado	NF-PM1	B1=2350000, B2=213850000
2018-07-01	storm5510	C-PRP	M5505989/11156719981502275841 : C358569A2A89849A
2017-12-04	kkmrkkblmbrbk	C-PRP	M5505989/11156719981502275841 : C358569A2A89849A
2008-11-02	Jayson King	F	Factor: 11156719981502275841
2000-08-31	Nayan Hajratwala	C-LL	7B9308E8E2E28AB3
1999-11-10	Net_Force	C-LL	7B9308E8E2E28AB3
1999-06-15	-anonymous-	NF	no factor TF: 1-62
1998-04-11	Sturle Sunde	NF	no factor TF: 1-61