2 150 879 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 2 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
672528025928814793	18	59.2	old
469092413965997229834017	24	78.6	2023-03-14 23:48:02

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	163 / 640

Estimated T-Level: 26.3 ⓘ

TF below 2^82 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Ezram van Rijnberk	04BB77A241DC0225	0
Verified (Factored)	1999-06-26	Fumitaka Yura	04BB77A241DC0225	209167

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-08	Oliver Kruse	87573BAE9416814B	1	0	1	3
Verified (Factored)	2017-11-18	kkmrkkblmbrbk	87573BAE9416814B	1	1361601	1	3
Verified	2023-03-16	Nesowa	E5B2802F37574CB6	2	634997	5	3

History

Date	User	Type	Result
2023-03-16	Michael_Lin	CERT	PRP Certification Proof certified good
2023-03-16	Nesowa	C-PRP	M2150879/672528025928814793/469092413965997229834017 : E5B2802F37574CB6 PRP proof power = 7 PRP: Verified Proof certified good
2023-03-15	Yves de Wandelaar	CERT	PRP Certification
2023-03-14	Nesowa	F-ECM	Factor: 469092413965997229834017 / (ECM curve 50, B1=50000, B2=27023535, Sigma=2010978737733994)
2017-11-18	kkmrkkblmbrbk	C-PRP	M2150879/672528025928814793 : 87573BAE9416814B PRP: Verified (Factored) PRP without proof (not generated)
2017-10-08	Oliver Kruse	C-PRP	M2150879/672528025928814793 : 87573BAE9416814B PRP: Verified (Factored) PRP without proof (not generated)
2016-03-21	alpertron	NF-PM1	B1=500000, B2=15000000, E=12