3 389 951 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 4 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
72843267089	11	36.1	old
402868556743	12	38.6	2008-09-07 19:48:52
1864913743631	13	40.8	2008-09-30 14:47:35
1375525284528737	16	50.3	2014-05-23 11:49:09

ECM

Digits	B1	Curves
25	50000	3 / 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	2017-11-05	kkmrkkblmbrbk	6D5F7F947C207CE7	4	595361	5	3
Verified	2017-11-21	Oliver Kruse	6D5F7F947C207CE7	4	2151432	5	3

History

Date	User	Type	Result
2022-07-24	Joss	NF-PM1	B1=3389951, B2=3423156660
2021-11-22	Joss	NF	no factor from 2^69 to 2^70
2021-09-06	Joss	NF-PM1	B1=3389951, B2=138987991, E=12
2021-09-06	Joss	NF-PM1	B1=3389951, B2=105088481, E=12
2021-09-05	Joss	NF-PM1	B1=3389951, B2=71188971, E=12
2021-09-04	Joss	NF-PM1	B1=3389951, B2=37289461, E=12
2021-09-03	Joss	NF-PM1	B1=3389951
2021-08-26	Joss	NF	no factor from 2^68 to 2^69
2021-02-01	Joss	NF	no factor from 2^67 to 2^68
2021-01-31	Joss	NF	no factor from 2^66 to 2^67
2021-01-30	Joss	NF	no factor from 2^65 to 2^66
2020-07-05	Joss	NF-PM1	B1=338995, B2=6779902, E=6
2017-11-21	Oliver Kruse	C-PRP	M3389951/72843267089/402868556743/1864913743631/1375525284528737 : 6D5F7F947C207CE7 PRP: Verified PRP without proof (not generated)
2017-11-05	kkmrkkblmbrbk	C-PRP	M3389951/72843267089/402868556743/1864913743631/1375525284528737 : 6D5F7F947C207CE7 PRP: Verified PRP without proof (not generated)
2014-05-23	TJAOI	F	Factor: 1375525284528737
2008-09-30	markr	F	Factor: 1864913743631
2008-09-07	Will Edgington	F	Factor: 402868556743