20210504, 13:21  #1618  
Aug 2020
2^{2}·3·5^{2} Posts 
Quote:


20210519, 20:16  #1619 
"Nuri, the dragon :P"
Jul 2016
Good old Germany
1453_{8} Posts 
I started a worker on C86s. Most are done within a few secs.
Any one else working on small composites? 
20210519, 21:18  #1620 
"Rich"
Aug 2002
Benicia, California
1315_{10} Posts 
I have had one worker on C81+ for the past few months. I was staying afloat until some spammer overflowed the C70's+.

20210520, 16:05  #1621 
Sep 2009
4053_{8} Posts 
I'm working on C70C80s. And occasionally looking for easy numbers in the 8090 digits range (easy usually means doable with SNFS).
I noticed a lot of numbers like 50##/206 (product of first 50 primes divided by some small number) and set a script going to factor them. That cleared out about 12,000 of them (mainly limited by how many updates per hour factordb would allow). If you can think of a sensible reason for adding them to factordb in the first place I'd be interested to hear it. Chris 
20210520, 18:47  #1622  
"Nuri, the dragon :P"
Jul 2016
Good old Germany
811 Posts 
Quote:
After about 22 hours in C86: Code:
============================================================ Runtime (H:M:S).....................: 0022:34:45 Time waiting for composites (H:M)...: 0000:00 Composite range.....................: 86  86 digits Report factors for composite #......: 3716 Factored C86 in.....................: 2.3 sec. New factors added...........: 2 / 4825 Factors already known.......: 1 / 1832 Small factors...............: 0 / 11190 Only small factors..........: 240 Worker collisions...........: 6 Total page requests.........: 7432 ============================================================ 164.6 composites/hr 329.1 page requests/hr 418.5 page requests/hr (last 60 composite requests) 306.9 new factors added/hr (last 60 composite requests) 

20210616, 17:57  #1623 
"Matthew Anderson"
Dec 2010
Oregon, USA
3^{2}×89 Posts 
I really enjoy factordb.com
It is very impressive and can handle 200 digit numbers. my latest contribution is 66640677780239073397348544449935115508844251925178751602054631202961 <68 digits> is 3138306167<10> · 2123460052...83<59> So C68 = P10 * P59. Used Maple computer algebra system ifactor() command. Very interesting. Good mathematical trivia. 
20210616, 18:09  #1624  
6809 > 6502
"""""""""""""""""""
Aug 2003
101×103 Posts
10011001011001_{2} Posts 
Quote:


20210618, 21:12  #1625 
"Matthew Anderson"
Dec 2010
Oregon, USA
3^{2}×89 Posts 
Hi again all,
Factordb.com has a limit to largest input it would take. I received the error. Error: Limit of about 10.000.000 digits exceeded I found an interesting result for a C1,000,000 [10^1,000,000] + 1 so that is (1 to the power of one million) + 1 factordb comes back with 12 prime factors and 2 composite factors. Woo Hoo Matt 
20210620, 06:14  #1626  
"Alexander"
Nov 2008
The Alamo City
17×41 Posts 
Quote:
Quote:
Last fiddled with by Happy5214 on 20210620 at 06:15 Reason: Bolding to match original 

20210620, 15:41  #1627 
Sep 2009
3·17·41 Posts 
@ MattcAnderson
If you want to do something useful try running the script in https://mersenneforum.org/showthread...=16849&page=43 post 471 for a few days. There are a lot of smallish composites in factordb and it could do with some help factoring them. Chris 
20210622, 16:14  #1628  
Feb 2017
Nowhere
2^{3}·11·53 Posts 
Quote:


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