4 869 349 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
182561398979249	15	47.4	old
322161536052646454321	21	68.1	2019-07-11 23:09:27

ECM

Digits	B1	Curves
25	50000	1 / 280

Estimated T-Level: 20.0 ⓘ

TF below 2^61 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	8933D854446658B8	1	0	1	3
Verified (Factored)	2018-04-01	Oliver Kruse	8933D854446658B8	1	1697581	1	3
Verified	2019-07-12	ATH	203EBA605408D984	2	1717640	5	3
Verified	2019-07-13	arnaud	203EBA605408D984	2	1595771	5	3

History

Date	User	Type	Result
2023-08-16	USAFSS	NF-PM1	B1=256000, B2=105522060
2019-07-13	arnaud	C-PRP	M4869349/182561398979249/322161536052646454321 : 203EBA605408D984 PRP: Verified PRP without proof (not generated)
2019-07-12	ATH	C-PRP	M4869349/182561398979249/322161536052646454321 : 203EBA605408D984 PRP: Verified PRP without proof (not generated)
2019-07-11	ATH	F-ECM	Factor: 322161536052646454321 / (ECM curve 1, B1=50000, B2=5000000, Sigma=1617853592711731)
2018-04-01	Oliver Kruse	C-PRP	M4869349/182561398979249 : 8933D854446658B8 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4869349/182561398979249 : 8933D854446658B8 PRP: Verified PRP without proof (not generated)