1 918 351 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
20058278057	11	34.2	old
14051107599056484017	20	63.6	2015-10-01 12:05:46
571594571437609699039	21	69.0	2020-10-31 11:01:56

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-04	Oliver Kruse	1425D8996F06DB42	2	0	1	3
Verified (Factored)	2017-11-10	Chang Chia-Tche	1425D8996F06DB42	2	105544	1	3
Verified	2020-11-02	arnaud	D8630AE92355A541	3	47050	5	3

P-1 factors

Date	Factor	B1	B2
2015-10-01	14051107599056484017	500000	15000000

History

Date	User	Type	Result
2021-04-07	Dylan Delgado	NF-PM1	B1=1000000, B2=71000000
2020-11-02	Ben Delo	CERT	PRP Certification Proof certified good
2020-11-02	arnaud	C-PRP	M1918351/20058278057/14051107599056484017/571594571437609699039 : D8630AE92355A541 PRP proof power = 7 PRP: Verified Proof certified good
2020-10-31	KALEIDOSCORE	F-ECM	Factor: 571594571437609699039 / (ECM curve 5, B1=50000, B2=5000000, Sigma=3026954308330685)
2017-11-10	Chang Chia-Tche	C-PRP	M1918351/20058278057/14051107599056484017 : 1425D8996F06DB42 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1918351/20058278057/14051107599056484017 : 1425D8996F06DB42 PRP: Verified (Factored) PRP without proof (not generated)
2015-10-01	alpertron	F-PM1	Factor: 14051107599056484017 / (P-1, B1=500000, B2=15000000, E=12)