Talk:Jordan-Pólya numbers: Difference between revisions
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(→Isn't that like N-smooth_numbers using n! instead of primes?: '439378587648000' now decomposing OK.) |
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:I believe (bicbw) there is no way to make 439,378,587,648,000 = 14! * 7! with only prime factorials. --[[User:Petelomax|Petelomax]] ([[User talk:Petelomax|talk]]) 02:53, 10 June 2023 (UTC)
:Yes, your right.14! = 13!*2*7 2= 2! but no way to get a lonely 7. Of course there 16!= 2!^4 * 15! . To much work for to less advantage --[[User:Horst|Horst]] ([[User talk:Horst|talk]]) 16:28, 11 June 2023 (UTC)
::I just tried my latest ''Decompose'' function on 439378587648000 and it does now give: 14! x 7! --[[User:PureFox|PureFox]] ([[User talk:PureFox|talk]]) 17:27, 11 June 2023 (UTC)
== Factoring the 1050th number ==
The 1050th jp number is 139,345,920,000. It factors as 7! * 5!^3 * 2!^4 or 8! * 5!^3 * 2! but the <del>Phix</del>/Julia/Wren entries are not getting that. Update: new algorithm posted, however my faffing about with prime powers is probably not the point, one-at-a-time/less greedy probably is. --[[User:Petelomax|Petelomax]] ([[User talk:Petelomax|talk]]) 05:31, 10 June 2023 (UTC)
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