2 146 283 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
4292567	7	22.0	old
39247168487658075481	20	65.1	2018-05-29 13:33:37

ECM

Digits	B1	Curves
25	50000	100 / 280

Estimated T-Level: 21.8 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-08	Oliver Kruse	55A681FB1DB9343B	1	0	1	3
Verified (Factored)	2017-11-18	kkmrkkblmbrbk	55A681FB1DB9343B	1	1695014	1	3
Verified	2018-06-01	_p95holder_	1B3F36764E52F04C	2	1495432	5	3
Verified	2018-06-01	Oliver Kruse	1B3F36764E52F04C	2	941561	5	3

History

Date	User	Type	Result
2018-06-01	Oliver Kruse	C-PRP	M2146283/4292567/39247168487658075481 : 1B3F36764E52F04C PRP: Verified PRP without proof (not generated)
2018-06-01	_p95holder_	C-PRP	M2146283/4292567/39247168487658075481 : 1B3F36764E52F04C PRP: Verified PRP without proof (not generated)
2018-05-29	TJAOI	F	Factor: 39247168487658075481 / TF: 65-66
2017-11-18	kkmrkkblmbrbk	C-PRP	M2146283/4292567 : 55A681FB1DB9343B PRP: Verified PRP without proof (not generated)
2017-10-08	Oliver Kruse	C-PRP	M2146283/4292567 : 55A681FB1DB9343B PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12