3 331 333 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
19987999	8	24.3	old

ECM

Digits	B1	Curves
25	50000	4 / 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	2017-11-04	Oliver Kruse	60263A59AA3ED6C1	1	2403394	5	3
Verified	2017-12-15	kkmrkkblmbrbk	60263A59AA3ED6C1	1	2584935	5	3

History

Date	User	Type	Result
2022-09-03	Joss	NF-PM1	B1=1200000, B2=218479800
2022-01-06	Joss	NF-PM1	B1=1200000, B2=111642300
2021-03-30	Joss	NF	no factor from 2^67 to 2^68
2020-10-23	Joss	NF-PM1	B1=333133, B2=3331333, E=6
2020-10-23	Joss	NF-PM1	B1=333133
2020-10-21	Joss	NF-PM1	B1=111044
2017-12-15	kkmrkkblmbrbk	C-PRP	M3331333/19987999 : 60263A59AA3ED6C1 PRP: Verified PRP without proof (not generated)
2017-11-04	Oliver Kruse	C-PRP	M3331333/19987999 : 60263A59AA3ED6C1 PRP: Verified PRP without proof (not generated)