4 061 663 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 5 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
8123327	7	23.0	old
593002799	9	29.1	2008-09-07 21:14:40
30803652193	11	34.8	2008-09-07 21:14:40
199019740484911	15	47.5	2008-09-07 21:14:40
8688556723510564098703	22	72.9	2018-11-27 11:15:12

ECM

Digits	B1	Curves
25	50000	2 / 280

Estimated T-Level: 20.0 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-11-13	Oliver Kruse	A128754A94B402A4	4	720876	5	3
Verified (Factored)	2017-12-20	kkmrkkblmbrbk	A128754A94B402A4	4	745589	5	3
Verified	2018-11-29	Oliver Kruse	A128754A94B402A4	5	2050444	5	3

History

Date	User	Type	Result
2022-09-11	USAFSS	NF-PM1	B1=180000, B2=96593640
2018-11-29	Oliver Kruse	C-PRP	M4061663/8123327/593002799/30803652193/199019740484911/8688556723510564098703 : A128754A94B402A4 PRP: Verified PRP without proof (not generated)
2018-11-27	rucio	F-ECM	Factor: 8688556723510564098703 / (ECM curve 2, B1=50000, B2=5000000)
2017-12-20	kkmrkkblmbrbk	C-PRP	M4061663/8123327/593002799/30803652193/199019740484911 : A128754A94B402A4 PRP: Verified PRP without proof (not generated)
2017-11-13	Oliver Kruse	C-PRP	M4061663/8123327/593002799/30803652193/199019740484911 : A128754A94B402A4 PRP: Verified PRP without proof (not generated)
2008-09-07	Will Edgington	F	Factor: 199019740484911
2008-09-07	Will Edgington	F	Factor: 30803652193
2008-09-07	Will Edgington	F	Factor: 593002799