305 933 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
5629144560959	13	42.4	old
623395852558900969511355361769	30	99.0	2021-09-18 01:21:17

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	430 / 640

Estimated T-Level: 28.4 ⓘ

TF below 2^89 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-22	Oliver Kruse	C86B2A71E680A941	1	0	1	3
Verified (Factored)	2017-10-12	Oliver Kruse	C86B2A71E680A941	1	214395	1	3
Verified (Factored)	2017-12-11	ATH	C86B2A71E680A941	1	151212	1	3
Verified (Factored)	2020-04-18	Oliver Kruse	B913B897FAB6C3C9	1	93321	5	3
Verified	2021-09-18	SRJ2877	B913B897FAB6C3C9	2	136854	5	3
Verified	2021-09-18	JackBlock	B913B897FAB6C3C9	2	177698	5	3

History

Date	User	Type	Result
2024-02-23	Denial140	NF-PM1	B1=10000000, B2=206662045590
2024-02-22	Denial140	NF-PM1	B1=10000000
2023-03-17	Denial140	NF-PM1	B1=1000000, B2=65871826020
2022-02-06	Lisander Viaene	NF-PM1	B1=50000
2021-09-18	chuenkit	CERT	PRP Certification Proof certified good
2021-09-18	JackBlock	C-PRP	M305933/5629144560959/623395852558900969511355361769 : B913B897FAB6C3C9 PRP proof power = 5 PRP: Verified Proof certified good
2021-09-18	chuenkit	CERT	PRP Certification Proof certified good
2021-09-18	SRJ2877	C-PRP	M305933/5629144560959/623395852558900969511355361769 : B913B897FAB6C3C9 PRP proof power = 5 PRP: Verified Proof certified good
2021-09-18	nordi	F-ECM	Factor: 623395852558900969511355361769 / (ECM curve 4, B1=250000, B2=38500000, Sigma=1793256597432115)
2020-04-18	Oliver Kruse	C-PRP	M305933/5629144560959 : B913B897FAB6C3C9 PRP: Verified (Factored) PRP without proof (small exponent)
2017-12-11	ATH	C-PRP	M305933/5629144560959 : C86B2A71E680A941 PRP: Verified (Factored) PRP without proof (small exponent)
2017-10-12	Oliver Kruse	C-PRP	M305933/5629144560959 : C86B2A71E680A941 PRP: Verified (Factored) PRP without proof (small exponent)
2017-09-22	Oliver Kruse	C-PRP	M305933/5629144560959 : C86B2A71E680A941 PRP: Verified (Factored) PRP without proof (not generated)
2017-09-22	Oliver Kruse	C-PRP	M305933/5629144560959 : C86B2A71E680A941 PRP without proof (not generated)