3 387 317 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
13139720556249719	17	53.5	old
120268549516131548839	21	66.7	2018-10-19 06:39:30

ECM

Digits	B1	Curves
25	50000	4 / 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 (Factored)	2017-11-05	Oliver Kruse	1502BE9CEC1FC5C9	1	194208	5	3
Verified (Factored)	2017-12-15	kkmrkkblmbrbk	1502BE9CEC1FC5C9	1	1311149	5	3
Verified	2018-10-21	J.R. Allen	1502BE9CEC1FC5C9	2	1205678	5	3
Verified	2018-10-21	Oliver Kruse	1502BE9CEC1FC5C9	2	240503	5	3

History

Date	User	Type	Result
2022-08-16	Joss	NF-PM1	B1=3387317, B2=368560500
2021-12-29	Joss	NF-PM1	B1=3387317, B2=111907950
2021-12-28	Joss	NF-PM1	B1=3387317
2021-10-24	Joss	NF	no factor from 2^67 to 2^68
2021-03-14	Joss	NF-PM1	B1=338731, B2=7113365, E=6
2021-03-14	Joss	NF-PM1	B1=338731, B2=3726048, E=6
2018-10-21	Oliver Kruse	C-PRP	M3387317/13139720556249719/120268549516131548839 : 1502BE9CEC1FC5C9 PRP: Verified PRP without proof (not generated)
2018-10-21	J.R. Allen	C-PRP	M3387317/13139720556249719/120268549516131548839 : 1502BE9CEC1FC5C9 PRP: Verified PRP without proof (not generated)
2018-10-19	MarkS	F-ECM	Factor: 120268549516131548839 / (ECM curve 1, B1=50000, B2=5000000)
2017-12-15	kkmrkkblmbrbk	C-PRP	M3387317/13139720556249719 : 1502BE9CEC1FC5C9 PRP: Verified PRP without proof (not generated)
2017-11-05	Oliver Kruse	C-PRP	M3387317/13139720556249719 : 1502BE9CEC1FC5C9 PRP: Verified PRP without proof (not generated)