1 915 241 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
27192591719	11	34.7	old
318217039290655548863	21	68.1	2021-04-22 20:14:41

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	105 / 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)	2017-09-30	alpertron	369C3E95AB1E8EE1	1	0	1	3
Verified (Factored)	2017-10-20	Oliver Kruse	369C3E95AB1E8EE1	1	1599606	1	3
Verified	2021-04-22	mikr	15C3D25F20BC155C	2	678776	5	3

History

Date	User	Type	Result
2021-04-22	Ben Delo	CERT	PRP Certification Proof certified good
2021-04-22	mikr	C-PRP	M1915241/27192591719/318217039290655548863 : 15C3D25F20BC155C PRP proof power = 7 PRP: Verified Proof certified good
2021-04-22	nordi	F-ECM	Factor: 318217039290655548863 / (ECM curve 1, B1=50000, B2=6750000, Sigma=7677641599139612)
2017-10-20	Oliver Kruse	C-PRP	M1915241/27192591719 : 369C3E95AB1E8EE1 PRP: Verified (Factored) PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M1915241/27192591719 : 369C3E95AB1E8EE1 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12