2 022 731 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
491371048157560217	18	58.8	old
153894979498734153894170207	27	87.0	2022-04-28 09:38:13

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	124 / 640

Estimated T-Level: 26.0 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		Bill Ingles	585F254965703B24	0
Verified (Factored)	1999-01-10	Bruce Mitchell	585F254965703B24	1099463

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-06	Oliver Kruse	A32288FA38D804AC	1	0	1	3
Verified (Factored)	2017-11-14	kkmrkkblmbrbk	A32288FA38D804AC	1	1653788	1	3
Verified	2022-04-28	aperson1	78D5F5C9CDB5C104	2	1695792	5	3
Verified	2022-05-05	_p95holder_	78D5F5C9CDB5C104	2	1106368	5	3

History

Date	User	Type	Result
2022-05-05	_p95holder_	C-PRP	M2022731/491371048157560217/153894979498734153894170207 : 78D5F5C9CDB5C104 PRP: Verified PRP without proof (not generated)
2022-04-28	lajo321	CERT	PRP Certification Proof certified good
2022-04-28	aperson1	C-PRP	M2022731/491371048157560217/153894979498734153894170207 : 78D5F5C9CDB5C104 PRP proof power = 7 PRP: Verified Proof certified good
2022-04-28	_p95holder_	F-ECM	Factor: 153894979498734153894170207 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-14	kkmrkkblmbrbk	C-PRP	M2022731/491371048157560217 : A32288FA38D804AC PRP: Verified PRP without proof (not generated)
2017-10-06	Oliver Kruse	C-PRP	M2022731/491371048157560217 : A32288FA38D804AC PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12