3 250 207 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
249908416231	12	37.9	old
1736334408068013770034876096664461697	37	120.4	2021-01-09 13:00:03

ECM

Digits	B1	Curves
25	50000	3 / 280

Estimated T-Level: 20.1 ⓘ

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)	2017-11-02	ATH	925A749978B7949A	1	2619751	5	3
Verified (Factored)	2017-11-19	Oliver Kruse	925A749978B7949A	1	1982043	5	3
Verified	2021-01-09	mrh	925A749978B7949A	2	1720389	5	3

P-1 factors

Date	Factor	B1	B2
2021-01-09	1736334408068013770034876096664461697	325020	3250207

History

Date	User	Type	Result
2022-07-17	Joss	NF-PM1	B1=3369499, B2=3278063250
2021-12-20	Joss	NF-PM1	B1=3369499, B2=116712750
2021-12-08	Joss	NF	no factor from 2^69 to 2^70
2021-12-07	Joss	NF	no factor from 2^68 to 2^69
2021-04-09	Joss	NF	no factor from 2^67 to 2^68
2021-01-17	Joss	NF-PM1	B1=325020, B2=6500414, E=6
2021-01-09	Cong Shengzhuo	CERT	PRP Certification Proof certified good
2021-01-09	mrh	C-PRP	M3250207/249908416231/1736334408068013770034876096664461697 : 925A749978B7949A PRP proof power = 7 PRP: Verified Proof certified good
2021-01-09	Joss	F-PM1	Factor: 1736334408068013770034876096664461697 / (P-1, B1=325020, B2=3250207, E=6)
2021-01-09	Joss	NF-PM1	B1=325020
2020-12-25	Joss	NF-PM1	B1=108340
2017-11-19	Oliver Kruse	C-PRP	M3250207/249908416231 : 925A749978B7949A PRP: Verified (Factored) PRP without proof (not generated)
2017-11-02	ATH	C-PRP	M3250207/249908416231 : 925A749978B7949A PRP: Verified (Factored) PRP without proof (not generated)