3 617 147 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
1240036331769727	16	50.1	old
39142919637009607999	20	65.1	2018-05-29 13:20:44

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)	2017-09-20	kkmrkkblmbrbk	8FD86EA5015E767C	1	0	1	3
Verified (Factored)	2017-11-26	Oliver Kruse	8FD86EA5015E767C	1	3218848	1	3
Verified	2018-06-01	_p95holder_	F5AF09A91D0E4268	2	156315	5	3
Verified	2018-06-03	Chang Chia-Tche	F5AF09A91D0E4268	2	864871	5	3

History

Date	User	Type	Result
2022-06-13	LordJulius	NF	no factor from 2^66 to 2^67
2022-05-20	Joss	NF-PM1	B1=100000, B2=130364850
2022-03-19	Lisander Viaene	NF-PM1	B1=100000, B2=234869250
2022-03-19	Lisander Viaene	NF-PM1	B1=100000
2022-03-15	Joss	NF	no factor from 2^67 to 2^68
2018-06-03	Chang Chia-Tche	C-PRP	M3617147/1240036331769727/39142919637009607999 : F5AF09A91D0E4268 PRP: Verified PRP without proof (not generated)
2018-06-01	_p95holder_	C-PRP	M3617147/1240036331769727/39142919637009607999 : F5AF09A91D0E4268 PRP: Verified PRP without proof (not generated)
2018-05-29	TJAOI	F	Factor: 39142919637009607999 / TF: 65-66
2017-11-26	Oliver Kruse	C-PRP	M3617147/1240036331769727 : 8FD86EA5015E767C PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M3617147/1240036331769727 : 8FD86EA5015E767C PRP: Verified PRP without proof (not generated)