1 901 507 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
10839946398205209179765359	26	83.2	2020-09-05 07:13:37

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	108 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Thomas Honold	20BADAAF7D9E8C09	0
Verified (Factored)	1998-12-27	Dave Clouser	20BADAAF7D9E8C09	407243
Verified (Factored)	2015-06-27	MadPoo	20BADAAF7D9E8C09	1065473

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-09-07	fre_games	AF221EF152EB8FD2	1	1461611	5	3
Verified	2020-09-15	nordi	AF221EF152EB8FD2	1	904948	5	3

History

Date	User	Type	Result
2020-09-15	nordi	C-PRP	M1901507/10839946398205209179765359 : AF221EF152EB8FD2 PRP: Verified PRP without proof (not generated)
2020-09-07	fre_games	C-PRP	M1901507/10839946398205209179765359 : AF221EF152EB8FD2 PRP: Verified PRP without proof (not generated)
2020-09-05	GAN	F-ECM	Factor: 10839946398205209179765359 / (ECM curve 4, B1=50000, B2=5000000, Sigma=7363327515083816)
2019-04-25	chuenkit	NF	no factor from 2^67 to 2^68
2017-11-22	mikr	NF-PM1	B1=8000000, B2=320000000, E=12
2017-03-03	Smok_bmv	NF	no factor from 2^66 to 2^67
2015-08-30	ramgeis	NF	no factor from 2^65 to 2^66
2015-06-27	MadPoo	C-LL	20BADAAF7D9E8C09
2015-05-16	monst	NF	no factor from 2^64 to 2^65
2015-05-16	omylist	NF	no factor from 2^63 to 2^64
2011-06-15	kurly	NF-PM1	B1=1000000, B2=30000000, E=12
2011-02-02	Carsten Kossendey	NF-PM1	B1=105000, B2=1785000, E=6
2011-01-12	GrunwalderGIMP	NF	no factor from 2^62 to 2^63
2011-01-12	GrunwalderGIMP	NF	no factor from 2^61 to 2^62
2009-05-24	Architects Cubed	NF	no factor from 2^60 to 2^61