3 739 339 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
42286478915021797823	20	65.2	2018-07-19 13:26:52
467673505818243526682555369	27	88.6	2015-10-27 17:09:55

ECM

Digits	B1	Curves
25	50000	6 / 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	Shift
Verified (Factored)	1998-04-27	David Khoo	43EBE03860E6C618	0
Verified (Factored)	1999-08-07	Andrew China	43EBE03860E6C618	3410896

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-20	kkmrkkblmbrbk	9CCC21B07290154F	1	0	1	3
Verified (Factored)	2017-12-03	Oliver Kruse	9CCC21B07290154F	1	89294	1	3
Verified	2018-07-19	ATH	322CBDBC3252E723	2	2119101	5	3
Verified	2018-07-20	Battlemaxx	322CBDBC3252E723	2	712952	5	3

P-1 factors

Date	Factor	B1	B2
2015-10-27	467673505818243526682555369	1600000	0

History

Date	User	Type	Result
2022-09-26	Joss	NF-PM1	B1=1000000, B2=130364850
2022-06-16	LordJulius	NF	no factor from 2^66 to 2^67
2022-05-15	Joss	NF-PM1	B1=500000, B2=130364850
2022-03-09	Joss	NF	no factor from 2^67 to 2^68
2018-07-20	Battlemaxx	C-PRP	M3739339/467673505818243526682555369/42286478915021797823 : 322CBDBC3252E723 PRP: Verified PRP without proof (not generated)
2018-07-19	ATH	C-PRP	M3739339/467673505818243526682555369/42286478915021797823 : 322CBDBC3252E723 PRP: Verified PRP without proof (not generated)
2018-07-19	TJAOI	F	Factor: 42286478915021797823 / TF: 65-66
2017-12-03	Oliver Kruse	C-PRP	M3739339/467673505818243526682555369 : 9CCC21B07290154F PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M3739339/467673505818243526682555369 : 9CCC21B07290154F PRP: Verified PRP without proof (not generated)
2015-10-27	mikr	F-PM1	Factor: 467673505818243526682555369 / (P-1, B1=1600000)
2015-01-23	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-23	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-02-12	Squeeky_Squirrel	NF-PM1	B1=110000, B2=2035000, E=6
2012-05-10	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-05-10	Grant McCracken	NF	no factor from 2^61 to 2^62
2009-07-06	Carsten Kossendey	NF-PM1	B1=20000, B2=265000
2009-03-05	S485122	NF	no factor from 2^60 to 2^61