2 188 331 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
4376663	7	22.1	old
762697416939761386969	21	69.4	2022-10-26 18:44:02

ECM

Digits	B1	Curves
25	50000	123 / 280

Estimated T-Level: 22.2 ⓘ

TF below 2^69 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-09	Oliver Kruse	56045FE123CE575C	1	0	1	3
Verified (Factored)	2017-11-19	ATH	56045FE123CE575C	1	405607	1	3
Verified	2022-10-26	Kevin_9611	194ECCF43B9D1BB7	2	968146	5	3

History

Date	User	Type	Result
2022-10-26	Ben Delo	CERT	PRP Certification Proof certified good
2022-10-26	Kevin_9611	C-PRP	M2188331/4376663/762697416939761386969 : 194ECCF43B9D1BB7 PRP proof power = 7 PRP: Verified Proof certified good
2022-10-26	_p95holder_	F-ECM	Factor: 762697416939761386969 / (ECM curve 7, B1=50000, B2=5000000)
2019-01-20	Joss	NF-PM1	B1=1000000, B2=10000000, E=12
2017-11-19	ATH	C-PRP	M2188331/4376663 : 56045FE123CE575C PRP: Verified (Factored) PRP without proof (not generated)
2017-10-09	Oliver Kruse	C-PRP	M2188331/4376663 : 56045FE123CE575C PRP: Verified (Factored) PRP without proof (not generated)
2016-03-29	alpertron	NF-PM1	B1=500000, B2=15000000, E=12