1 721 011 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
1170979405020829836687623	25	80.0	2023-01-20 08:36:23
4957919091379960275140689	25	82.0	2016-09-18 15:07:26

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 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)		Carl Mikkelsen	EF70D0873AD97AFB	0
Verified (Factored)	1998-12-06	Walter Welton-Lair	EF70D0873AD97AFB	425590
Verified (Factored)	2015-07-18	MadPoo	EF70D0873AD97AFB	457134

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-03	Oliver Kruse	9965FA218297CD3B	1	0	1	3
Verified (Factored)	2017-11-03	srow7	9965FA218297CD3B	1	981671	1	3
Verified	2023-01-21	LordJulius	838F8FFFB0AB985D	2	1112708	5	3

History

Date	User	Type	Result
2023-01-21	M. Farrokhi D. G.	CERT	PRP Certification Proof certified good
2023-01-21	LordJulius	C-PRP	M1721011/1170979405020829836687623/4957919091379960275140689 : 838F8FFFB0AB985D PRP proof power = 7 PRP: Verified Proof certified good
2023-01-20	TJAOI	F-ECM	Factor: 1170979405020829836687623 / (ECM curve 37, B1=250000, B2=40000000)
2017-11-03	srow7	C-PRP	M1721011/4957919091379960275140689 : 9965FA218297CD3B PRP: Verified (Factored) PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1721011/4957919091379960275140689 : 9965FA218297CD3B PRP: Verified (Factored) PRP without proof (not generated)
2016-09-18	bam	F-ECM	Factor: 4957919091379960275140689 / (ECM curve 2, B1=50000, B2=5000000)
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
2015-07-18	MadPoo	C-LL	EF70D0873AD97AFB
2015-05-03	snme2pm1	NF	no factor from 2^64 to 2^65
2015-05-03	snme2pm1	NF	no factor from 2^63 to 2^64
2015-02-20	David Campeau	NF-PM1	B1=1500000, B2=65000000, E=12
2015-02-12	Joss	NF-PM1	B1=373931
2015-01-09	Joss	NF-PM1	B1=280941
2014-10-06	Joss	NF-PM1	B1=187294
2014-05-03	Joss	NF-PM1	B1=150000
2014-04-04	Joss	NF-PM1	B1=100000
2011-02-07	Carsten Kossendey	NF-PM1	B1=90000, B2=1507500, E=6
2010-10-27	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-23	Architects Cubed	NF	no factor from 2^60 to 2^61

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