1 811 287 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

No factors below 2⁶⁸

TF target 2⁶¹

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

P-1

B1 =	25000000
B2 =	69189473430

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	105 / 640

Estimated T-Level: 25.8 ⓘ

Status	Date	User	Residue	Shift
Verified		Jeff Woods	67B86E3950613CBC	0
Verified	1998-12-13	Warren Matthews	67B86E3950613CBC	449339
Verified	2015-07-10	MadPoo	67B86E3950613CBC	1220263

History

Date	User	Type	Result
2023-08-26	kurly	NF-PM1	B1=25000000, B2=69189473430
2023-06-30	Joss	NF-PM1	B1=1811287, B2=6155133600
2023-02-25	Joss	NF-PM1	B1=1811287, B2=2665000800
2023-01-07	Joss	NF-PM1	B1=1811287, B2=919969050
2022-10-29	masser	NF-PP1	Start=2/7, B1=800000, B2=25600000
2022-10-27	masser	NF-PP1	Start=6/5, B1=400000, B2=10800000
2022-10-27	masser	NF-PP1	Start=72/19, B1=200000, B2=4400000
2019-07-17	TJAOI	NF	no factor from 2^67 to 2^68
2018-09-20	Joss	NF-PM1	B1=1811287, B2=181128700, E=12
2018-04-16	TJAOI	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^62
2015-09-02	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-10	MadPoo	C-LL	67B86E3950613CBC
2015-05-15	mikr	NF-PM1	B1=2780000, B2=91760000, E=12
2015-04-22	snme2pm1	NF	no factor from 2^64 to 2^65
2015-04-22	snme2pm1	NF	no factor from 2^63 to 2^64
2014-09-20	Joss	NF-PM1	B1=170872
2014-05-12	Joss	NF-PM1	B1=135436
2011-02-07	Carsten Kossendey	NF-PM1	B1=100000, B2=1650000, E=6
2011-01-21	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-17	Architects Cubed	NF	no factor from 2^60 to 2^61
2008-11-16	George Woltman	NF-PM1	B1=20000, B2=270000

Username
Password