3 221 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 2 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
644201	6	19.3	old
202410492886397889245888850954722129603729	42	137.2	2018-11-18 06:05:06

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	9201 / 9201
50	44000000	16550 / 16550
55	110000000	15004 / 40830

Estimated T-Level: 51.8 ⓘ

TF below 2^167 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-21	Oliver Kruse	C9F868CE6B1A2779	1	0	1	3
Verified (Factored)	2017-10-12	kkmrkkblmbrbk	C9F868CE6B1A2779	1	1911	1	3
Verified	2018-11-18	rucio	0A59E638A21FD5D1	2	1850	5	3
Verified	2018-11-18	kkmrkkblmbrbk	0A59E638A21FD5D1	2	208	5	3
Verified	2020-04-17	Oliver Kruse	0A59E638A21FD5D1	2	448	5	3

History

Date	User	Type	Result
2022-04-16	mikr	NF-PM1	B1=70000000000, B2=367004699921960100
2021-07-09	ViliamF	NF-PM1	B1=1000000000, B2=191000000000
2020-04-17	Oliver Kruse	C-PRP	M3221/644201/202410492886397889245888850954722129603729 : 0A59E638A21FD5D1 PRP: Verified PRP without proof (small exponent)
2018-12-15	-Anonymous-	NF-PM1	B1=1000000, B2=1000000000, E=12
2018-11-18	kkmrkkblmbrbk	C-PRP	M3221/644201/202410492886397889245888850954722129603729 : 0A59E638A21FD5D1 PRP: Verified PRP without proof (small exponent)
2018-11-18	rucio	C-PRP	M3221/644201/202410492886397889245888850954722129603729 : 0A59E638A21FD5D1 PRP: Verified PRP without proof (small exponent)
2018-11-18	eteo	F-ECM	Factor: 202410492886397889245888850954722129603729 / (ECM curve 493, B1=11000000, B2=1100000000)
2017-10-12	kkmrkkblmbrbk	C-PRP	M3221/644201 : C9F868CE6B1A2779 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M3221/644201 : C9F868CE6B1A2779 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M3221/644201 : C9F868CE6B1A2779 PRP without proof (not generated)