5 685 221 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 3 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
282370702635687559	18	58.0	old
1981014701787869903	19	60.8	1998-09-13 00:00:00
42552808453718043449	20	65.2	2018-07-25 09:34:16

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-12-15	Oliver Kruse	47B5F7A96E697CD2	2	4147754	5	3
Verified (Factored)	2018-04-12	kkmrkkblmbrbk	47B5F7A96E697CD2	2	816314	5	3
Verified	2018-07-27	_p95holder_	47B5F7A96E697CD2	3	1547071	5	3

History

Date	User	Type	Result
2023-05-12	This -Anonymous-	NF-PM1	B1=50000, B2=1000000, E=6
2018-07-27	_p95holder_	C-PRP	M5685221/282370702635687559/1981014701787869903/42552808453718043449 : 47B5F7A96E697CD2 PRP: Verified PRP without proof (not generated)
2018-07-25	TJAOI	F	Factor: 42552808453718043449 / TF: 65-66
2018-04-12	kkmrkkblmbrbk	C-PRP	M5685221/282370702635687559/1981014701787869903 : 47B5F7A96E697CD2 PRP: Verified PRP without proof (not generated)
2017-12-15	Oliver Kruse	C-PRP	M5685221/282370702635687559/1981014701787869903 : 47B5F7A96E697CD2 PRP: Verified PRP without proof (not generated)
2008-09-08	Will Edgington	F-ECM	Factor: 1981014701787869903