1 971 601 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
2318602777	10	31.1	old
104338236827607942908857	24	76.5	2021-11-21 01:11:54

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	58 / 640

Estimated T-Level: 25.5 ⓘ

TF below 2^80 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-05	Oliver Kruse	7408ED904FAA96C3	1	0	1	3
Verified (Factored)	2017-11-12	kkmrkkblmbrbk	7408ED904FAA96C3	1	1832189	1	3
Verified	2021-11-21	MarkS	3313337F17C093D0	2	526547	5	3

History

Date	User	Type	Result
2023-12-17	USAFSS	NF-PM1	B1=480000, B2=460965960
2022-08-12	USAFSS	NF-PM1	B1=132000, B2=134381520
2021-11-21	curtisc	CERT	PRP Certification Proof certified good
2021-11-21	MarkS	C-PRP	M1971601/2318602777/104338236827607942908857 : 3313337F17C093D0 PRP proof power = 7 PRP: Verified Proof certified good
2021-11-21	MarkS	F-ECM	Factor: 104338236827607942908857 / (ECM curve 5, B1=50000, B2=5000000, Sigma=5460216311100591)
2017-11-12	kkmrkkblmbrbk	C-PRP	M1971601/2318602777 : 7408ED904FAA96C3 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1971601/2318602777 : 7408ED904FAA96C3 PRP: Verified (Factored) PRP without proof (not generated)