1 217 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
1045741327	10	30.0	old
6116773272167843384976777858063213917010557325918356879	55	182.0	2011-10-25 23:11:29
22053390021902056444354293154701006674049109757797668799	56	183.8	2014-05-21 01:54:31

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	40830 / 40830
60	260000000	105362 / 105362
65	800000000	194238 / 194238
70	2400000000	79249 / 350860

Estimated T-Level: 66.1 ⓘ

TF below 2^215 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-27	Oliver Kruse	F54FFA290FC61C27	3	0	1	3
Verified	2017-10-09	Chang Chia-Tche	F54FFA290FC61C27	3	0	1	3
Verified	2017-10-12	kkmrkkblmbrbk	F54FFA290FC61C27	3	509	1	3
Verified	2020-04-17	Oliver Kruse	6A5D96C6B126C44D	3	97	5	3
Verified	2020-08-12	_p95holder_	6A5D96C6B126C44D	3	591	5	3

History

Date	User	Type	Result
2021-09-28	Oliver Kruse	NF-PP1	Start=3/1, B1=10000000000, B2=9924641473652116
2021-07-18	ViliamF	NF-PP1	Start=2/7, B1=1000000000, B2=221000000000
2021-03-27	nordi	NF-PM1	B1=1000000000000, B2=2232843418649129478
2020-12-22	Ruslan Borisov	NF	no factor from 2^56 to 2^57
2020-12-22	Ruslan Borisov	NF	no factor from 2^55 to 2^56
2020-12-22	Ruslan Borisov	NF	no factor from 2^54 to 2^55
2020-12-22	Ruslan Borisov	NF	no factor from 2^53 to 2^54
2020-12-22	Ruslan Borisov	NF	no factor from 2^52 to 2^53
2020-12-22	Ruslan Borisov	NF	no factor from 2^51 to 2^52
2020-12-22	Ruslan Borisov	NF	no factor from 2^30 to 2^51
2020-08-12	_p95holder_	C-PRP	M1217/1045741327/6116773272167843384976777858063213917010557325918356879/22053390021902056444354293154701006674049109757797668799 : 6A5D96C6B126C44D PRP: Verified PRP without proof (small exponent)
2020-04-17	Oliver Kruse	C-PRP	M1217/1045741327/6116773272167843384976777858063213917010557325918356879/22053390021902056444354293154701006674049109757797668799 : 6A5D96C6B126C44D PRP: Verified PRP without proof (small exponent)
2017-10-12	kkmrkkblmbrbk	C-PRP	M1217/1045741327/6116773272167843384976777858063213917010557325918356879/22053390021902056444354293154701006674049109757797668799 : F54FFA290FC61C27 PRP: Verified PRP without proof (not generated)
2017-10-09	Chang Chia-Tche	C-PRP	M1217/known_factors : F54FFA290FC61C27 PRP: Verified PRP without proof (not generated)
2017-09-27	Oliver Kruse	C-PRP	M1217/1045741327/6116773272167843384976777858063213917010557325918356879/22053390021902056444354293154701006674049109757797668799 : F54FFA290FC61C27 PRP: Verified PRP without proof (not generated)
2017-09-25	csaba	C-PRP	M1217/known_factors : F54FFA290FC61C27 PRP without proof (not generated)
2016-09-07	kkmrkkblmbrbk	NF-PM1	B1=1000000000, B2=100000000000, E=12
2014-05-21	-Anonymous-	F-ECM	Factor: 22053390021902056444354293154701006674049109757797668799
2011-10-25	Michael Kenn	F-ECM	Factor: 6116773272167843384976777858063213917010557325918356879