1 373 881 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
39615513750093690993572647	26	85.0	2016-04-05 09:19:37

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	105 / 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
Bad		Alex and Nick Myrman	53E7812CABE4575C	0
Verified (Factored)		Cornelius Caesar	D3E7812BABE44F5B	0
Bad	1997-12-30	Mikko Tommila	3F7DBFA82522697C	0
Verified (Factored)	2015-03-27	NR	D3E7812BABE44F5B	500679
Verified (Factored)	2015-03-27	MadPoo	D3E7812BABE44F5B	186219

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-30	Oliver Kruse	6997999E3C3CEC54	1	0	1	3
Verified	2017-10-25	kkmrkkblmbrbk	6997999E3C3CEC54	1	127586	1	3

History

Date	User	Type	Result
2017-10-25	kkmrkkblmbrbk	C-PRP	M1373881/39615513750093690993572647 : 6997999E3C3CEC54 PRP: Verified PRP without proof (not generated)
2017-09-30	Oliver Kruse	C-PRP	M1373881/39615513750093690993572647 : 6997999E3C3CEC54 PRP: Verified PRP without proof (not generated)
2016-04-05	BloodIce	F-ECM	Factor: 39615513750093690993572647 / (ECM curve 8, B1=50000, B2=5000000)
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-03-31	-Anonymous-	NF	no factor from 2^71 to 2^72
2015-03-31	-Anonymous-	NF	no factor from 2^70 to 2^71
2015-03-31	-Anonymous-	NF	no factor from 2^69 to 2^70
2015-03-31	-Anonymous-	NF	no factor from 2^68 to 2^69
2015-03-31	-Anonymous-	NF	no factor from 2^67 to 2^68
2015-03-31	-Anonymous-	NF	no factor from 2^66 to 2^67
2015-03-31	-Anonymous-	NF	no factor from 2^65 to 2^66
2015-03-31	-Anonymous-	NF	no factor from 2^64 to 2^65
2015-03-31	-Anonymous-	NF	no factor from 2^63 to 2^64
2015-03-27	MadPoo	C-LL	D3E7812BABE44F5B
2015-03-27	NR	C-LL	D3E7812BABE44F5B
2014-09-07	mikr	NF-PM1	B1=3106900, B2=111849000, E=12
2014-04-21	Joss	NF-PM1	B1=200000
2014-04-15	-Anonymous-	NF-PM1	B1=145000
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-08-10	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2009-02-24	Sturle Sunde	NF	no factor from 2^60 to 2^61

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