2 952 667 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
21368031800287	14	44.3	old
168443180103937	15	47.3	2014-02-28 11:42:11
1578738795502769447	19	60.5	2016-02-09 12:15:06

ECM

Digits	B1	Curves
25	50000	128 / 280

Estimated T-Level: 22.3 ⓘ

TF below 2^69 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-26	Oliver Kruse	36021570093D4D26	3	83441	5	3
Verified	2017-12-09	kkmrkkblmbrbk	36021570093D4D26	3	275789	5	3

History

Date	User	Type	Result
2023-02-12	USAFSS	NF-PM1	B1=360000, B2=298405800
2017-12-09	kkmrkkblmbrbk	C-PRP	M2952667/21368031800287/168443180103937/1578738795502769447 : 36021570093D4D26 PRP: Verified PRP without proof (not generated)
2017-10-26	Oliver Kruse	C-PRP	M2952667/21368031800287/168443180103937/1578738795502769447 : 36021570093D4D26 PRP: Verified PRP without proof (not generated)
2016-02-09	TJAOI	F	Factor: 1578738795502769447 / TF: 60-61
2014-02-28	TJAOI	F	Factor: 168443180103937