2 885 039 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
218469900505005911	18	57.6	old
39250115011998786521	20	65.1	2018-05-29 13:33:52

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 (Factored)	2017-10-23	Oliver Kruse	10409CB83F5C7DD5	1	1697993	5	3
Verified (Factored)	2017-12-08	kkmrkkblmbrbk	10409CB83F5C7DD5	1	2076959	5	3
Verified	2018-06-01	_p95holder_	10409CB83F5C7DD5	2	572845	5	3

History

Date	User	Type	Result
2022-11-29	USAFSS	NF-PM1	B1=320000, B2=243437040
2018-06-01	_p95holder_	C-PRP	M2885039/218469900505005911/39250115011998786521 : 10409CB83F5C7DD5 PRP: Verified PRP without proof (not generated)
2018-05-29	TJAOI	F	Factor: 39250115011998786521 / TF: 65-66
2017-12-08	kkmrkkblmbrbk	C-PRP	M2885039/218469900505005911 : 10409CB83F5C7DD5 PRP: Verified PRP without proof (not generated)
2017-10-23	Oliver Kruse	C-PRP	M2885039/218469900505005911 : 10409CB83F5C7DD5 PRP: Verified PRP without proof (not generated)