1 852 393 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
44457433	8	25.4	old
6561056397457220839711	22	72.5	2021-06-26 09:34:39

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-04	Oliver Kruse	F955F6F12B172636	1	0	1	3
Verified (Factored)	2017-11-07	kkmrkkblmbrbk	F955F6F12B172636	1	1088614	1	3
Verified	2021-06-27	kutens	A371485502F0E15C	2	1714583	5	3

History

Date	User	Type	Result
2021-06-27	ky0uraku	CERT	PRP Certification Proof certified good
2021-06-27	kutens	C-PRP	M1852393/44457433/6561056397457220839711 : A371485502F0E15C PRP proof power = 7 PRP: Verified Proof certified good
2021-06-26	TJAOI	F-ECM	Factor: 6561056397457220839711 / (ECM curve 25, B1=50000, B2=6600000)
2017-11-07	kkmrkkblmbrbk	C-PRP	M1852393/44457433 : F955F6F12B172636 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1852393/44457433 : F955F6F12B172636 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12