4 238 459 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
30508292251313	14	44.8	old
54638220380531650999	20	65.6	2018-12-30 07:35:51
870627812620424142412423	24	79.5	2023-03-11 04:14:17

ECM

Digits	B1	Curves
25	50000	1 / 280

Estimated T-Level: 20.0 ⓘ

TF below 2^61 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-11-16	Oliver Kruse	CD89B6D7672E83D1	1	3060555	5	3
Verified (Factored)	2017-12-29	kkmrkkblmbrbk	CD89B6D7672E83D1	1	1468912	5	3
Verified (Factored)	2018-12-30	Oliver Kruse	CD89B6D7672E83D1	2	2569335	5	3
Verified	2023-03-17	LaurV	CD89B6D7672E83D1	3	2225481	5	3

P-1 factors

Date	Factor	B1	B2
2023-03-11	870627812620424142412423	224000	119776800

History

Date	User	Type	Result
2023-03-17	curtisc	CERT	PRP Certification Proof certified good
2023-03-17	LaurV	C-PRP	M4238459/30508292251313/54638220380531650999/870627812620424142412423 : CD89B6D7672E83D1 PRP proof power = 7 PRP: Verified Proof certified good
2023-03-11	USAFSS	F-PM1	Factor: 870627812620424142412423 / (P-1, B1=224000, B2=119776800)
2018-12-30	Oliver Kruse	C-PRP	M4238459/30508292251313/54638220380531650999 : CD89B6D7672E83D1 PRP: Verified (Factored) PRP without proof (not generated)
2018-12-30	ATH	F-ECM	Factor: 54638220380531650999 / (ECM curve 1, B1=50000, B2=5000000)
2017-12-29	kkmrkkblmbrbk	C-PRP	M4238459/30508292251313 : CD89B6D7672E83D1 PRP: Verified (Factored) PRP without proof (not generated)
2017-11-16	Oliver Kruse	C-PRP	M4238459/30508292251313 : CD89B6D7672E83D1 PRP: Verified (Factored) PRP without proof (not generated)