646730219521 Divides F19

Buckle · 2010-02-25, 01:08

This is a smaller factor than I would have anticipated.

646 Billion 730 Million 219 Thousand 521

ECM found a factor in curve #1, stage #1
Sigma=3460786319450698, B1=3000000, B2=300000000.
UID: Buckle/G801, F19 has a factor: 646730219521, AID: A5CC03C1F2227056DE35CDEAC3E17011

David Bessell
(No relation to Uncle Friedrich)

rogue · 2010-02-25, 01:25

Quote:

Originally Posted by Buckle

This is a smaller factor than I would have anticipated.

ECM found a factor in curve #1, stage #1
Sigma=3460786319450698, B1=3000000, B2=300000000.
UID: Buckle/G801, F19 has a factor: 646730219521, AID: A5CC03C1F2227056DE35CDEAC3E17011

This is a known factor equivalent to 308385*2^21+1.

Buckle · 2010-02-25, 02:12

sorry
typo in the "work to do" file

rogue · 2010-02-25, 04:08

Quote:

Originally Posted by Buckle

sorry
typo in the "work to do" file

Keep at it. You might get lucky...

ET_ · 2010-02-25, 10:29

Quote:

Originally Posted by rogue

This is a known factor equivalent to 308385*2^21+1.

Maybe a lowp.txt file not updated?

Luigi

bdodson · 2010-03-27, 01:08

Quote:

Originally Posted by rogue

Keep at it. You might get lucky...

Nice suggestion! The F22 factor is p35? Also GIMPS ecm, as above? -Bruce

(no google hits for the factor, not even the forum post.)

update:

Code:

     1 Buckle                  15540.872     7626         2 |                        
     2 James Hintz              2529.371     2881         0 |                        
     3 eteo                     2259.553       67         0 |                        
     4 Tapio Rajala             2125.422      770         1 |   1

is the GIMPS listing for ECM on Fermat numbers. I also got what
appeared to be a law firm listing in .au, for what it's worth.

ixfd64 · 2010-03-28, 02:21

Quote:

Originally Posted by rogue

Keep at it. You might get lucky...

It looks like he did.

Buckle · 2010-03-29, 22:56

Quote:

Originally Posted by bdodson

Nice suggestion! The F22 factor is p35? Also GIMPS ecm, as above? -Bruce

(no google hits for the factor, not even the forum post.)

update:

Code:

     1 Buckle                  15540.872     7626         2 |                        
     2 James Hintz              2529.371     2881         0 |                        
     3 eteo                     2259.553       67         0 |                        
     4 Tapio Rajala             2125.422      770         1 |   1

is the GIMPS listing for ECM on Fermat numbers. I also got what
appeared to be a law firm listing in .au, for what it's worth.

The law firm is Page Seager and another David Bessell works there. Coincidentally PS is situated about 200 metres down the road from St Michael's Collegiate where I work.

2010-02-25, 02:12	#3
Buckle Jul 2009 Hobart, Australia 11 Posts	Ooops sorry typo in the "work to do" file Last fiddled with by Buckle on 2010-02-25 at 02:12

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2010-02-25, 01:08	#1
Buckle Jul 2009 Hobart, Australia 11₁₀ Posts	646730219521 Divides F19 This is a smaller factor than I would have anticipated. 646 Billion 730 Million 219 Thousand 521 ECM found a factor in curve #1, stage #1 Sigma=3460786319450698, B1=3000000, B2=300000000. UID: Buckle/G801, F19 has a factor: 646730219521, AID: A5CC03C1F2227056DE35CDEAC3E17011 David Bessell (No relation to Uncle Friedrich) Last fiddled with by Buckle on 2010-02-25 at 02:08