1 966 831 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
18334798583	11	34.1	old
758521104480233	15	49.4	2008-08-26 20:20:24
149355313360148992079	21	67.0	2021-01-21 18:53:20

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	58 / 640

Estimated T-Level: 25.5 ⓘ

TF below 2^80 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-05	Oliver Kruse	AB1A4A288324939C	2	0	1	3
Verified (Factored)	2017-11-12	kkmrkkblmbrbk	AB1A4A288324939C	2	297869	1	3
Verified	2021-01-23	marcomich	8BB6E4F9846F9F88	3	288920	5	3
Verified	2021-01-24	Oliver Kruse	8BB6E4F9846F9F88	3	604234	5	3

History

Date	User	Type	Result
2022-04-12	Lisander Viaene	NF-PM1	B1=500000, B2=1964033610
2021-01-24	Franklin Webber	CERT	PRP Certification Proof certified good
2021-01-24	Oliver Kruse	C-PRP	M1966831/18334798583/758521104480233/149355313360148992079 : 8BB6E4F9846F9F88 PRP proof power = 7 PRP: Verified Proof certified good
2021-01-23	marcomich	C-PRP	M1966831/18334798583/758521104480233/149355313360148992079 : 8BB6E4F9846F9F88 PRP: Verified PRP without proof (not generated)
2021-01-21	nordi	F-ECM	Factor: 149355313360148992079 / (ECM curve 4, B1=50000, B2=6750000, Sigma=1082639147727478)
2017-11-12	kkmrkkblmbrbk	C-PRP	M1966831/18334798583/758521104480233 : AB1A4A288324939C PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1966831/18334798583/758521104480233 : AB1A4A288324939C PRP: Verified PRP without proof (not generated)
2008-08-26	-Anonymous-	F	Factor: 758521104480233