20210321, 15:29  #1013 
Romulan Interpreter
Jun 2011
Thailand
2^{3}×1,193 Posts 
I did the correction in mentioned post, re gender (his>its) in four places. FWIW the things work the same in Romanian, we have a neutral gender, but we don't have an "it" for it. Neuter things are "he" when singular. With plurals, things get more complicate, we have a "femininethey" and a "masculinethey". For neuters plurals, "femininethey" is used. That is why I also make this mistake, calling the dog "he" and the cat "she" when "it" should be used. So, no harm done. Somebody told me that it is not incorrect in English to use he/she when you want to personify things. So, for me, numbers are important persons! Especially when prime and have millions of digits!
Last fiddled with by LaurV on 20210321 at 15:30 
20210321, 16:27  #1014  
"Alexander"
Nov 2008
The Alamo City
2×3×109 Posts 
Quote:
Code:
void log_msg(string msg, bool timestamp) { ofstream f(cfg.log_file.c_str(), ios::app); if (!f.is_open()) { cout << "WARNING: couldn't open log file for writing!" << endl; return; } if (timestamp) f << get_timestamp() << " "; f << msg; f.close(); } Edit: i is a 32bit signed int that can go up to more than 2e9, so it should be more than enough. Last fiddled with by Happy5214 on 20210321 at 16:31 

20210321, 17:39  #1015  
"Alexander"
Nov 2008
The Alamo City
2·3·109 Posts 
Quote:
Quote:
Edit: There's a slight typo from your request in that it prints a caret ("^") instead of a space to the log. That's a copypaste error from the line below that's easy to fix. Last fiddled with by Happy5214 on 20210321 at 17:43 Reason: Typo found in code 

20210321, 18:09  #1016  
"Garambois JeanLuc"
Oct 2011
France
1143_{8} Posts 
Quote:
Thank you very much, this is exactly what I need ! Now, I will be able to run the calculations for bases 3, 5 and 7. 

20210321, 18:15  #1017  
"Garambois JeanLuc"
Oct 2011
France
13×47 Posts 
Quote:
OK thanks a lot. But unless I'm mistaken, two corrections are missing where the "his" remains ! "And then next is : 80640 = 2^8*3^2*5*7, but this time, his double and his triple are not suitable !" 

20210321, 19:49  #1018  
"Alexander"
Nov 2008
The Alamo City
2×3×109 Posts 
Quote:
Ah, anthropomorphizing a number. That's definitely possible and would make using gendered pronouns grammatically valid, though it'll get you weird looks, and it will probably look to a native speaker more like the translation error we encountered above than the desired effect of a personlike number. But it's a clever way to look at it. 

20210321, 21:14  #1019 
"Alexander"
Nov 2008
The Alamo City
2·3·109 Posts 
I made a slight improvement. This version also logs the factors found, so you can verify that they actually divide the number (using, say, FactorDB) and the abundance (with, say, PARI/GP). I also fixed the caret/space issue.

20210322, 18:03  #1020  
"Garambois JeanLuc"
Oct 2011
France
1001100011_{2} Posts 
Quote:
Thank you very much. I use this latter program. I will let it run for several weeks for bases 3, 5 and 7. 

20210322, 20:42  #1021 
"Alexander"
Nov 2008
The Alamo City
2·3·109 Posts 
Figured I'd get this in before the next page update, but I'm done with the base 24 range between 24^20 and 24^30 and am releasing those. I'm currently working on 24^33 on my desktop (24^31 was terminated in the initial setup run), and after a series of downdriver runs, it's now at 116 digits with a D6. I'll continue to find good downdriver runs to plow through on my laptop. I added more than 3500 terms to 770^43 earlier today, but with nothing to show for it.

20210322, 20:44  #1022 
Aug 2020
2·3^{2} Posts 
I tried a few number of exponents on base 7.
So far 1987441237556775=3^5 · 5^2 · 7 · 11 · 13 · 17 · 19 · 23 · 29 · 37 · 41 is lowest odd n I found that s(7^n) is abundant, but with primes <10^{5}. 
20210323, 18:25  #1023 
"Garambois JeanLuc"
Oct 2011
France
13×47 Posts 
OK, page updated.
Many thanks to all for your help. Added base : 62. New bases reserved for yoyo : 58, 2310, 30030, 510510, 9699690, 82589933. 75 bases in total. Thank you all for checking if everything is in accordance with your requests. 
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