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Talk:Jordan-Pólya numbers: Difference between revisions

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== Factoring the 1050th number ==
The 1050th jp number is 139,345,920,000. OneIt andfactors Ias suspect7! the* only5!^3 possible* factorisation2!^4 isor 78! * 5!^3 * 2!^4, but the <del>Phix</del>/Julia/Wren entries are not getting that. IUpdate: havenew thoughtalgorithm ofposted. a--[[User:Petelomax|Petelomax]] better([[User strategy,talk:Petelomax|talk]]) based on the prime powers05:31, but10 itJune is2023 not straightforward and would naturally produce the ''lowest'' factorials - I ''think'' I might have just thought of a way to convert that to the highest factorials... In the meantime, some examples:(UTC)
<pre>
92,160 = 6! * 2!^7, or
92,160 = 5! * 3! * 2!^7
18,345,885,696 = 4!^7 * 2!^2, or
18,345,885,696 = 3!^7 * 2!^16
139,345,920,000 = 7! * 5!^3 * 2!^4 (only one?)
18,345,885,696 = 4!^7 * 2!^2, or
18,345,885,696 = 3!^7 * 2!^16
724,775,731,200 = 6! * 5! * 2!^23, or
724,775,731,200 = 5!^2 * 3! * 2!^23
9,784,472,371,200 = 6!^2 * 4!^2 * 2!^15, or
9,784,472,371,200 = 5!^2 * 3!^4 * 2!^19
439,378,587,648,000 = 14! * 7! (only one?)
7,213,895,789,838,336 = 4!^8 * 2!^16, or
7,213,895,789,838,336 = 3!^8 * 2!^32
</pre>
There are probably only a few ways to do each, maybe show them all? --[[User:Petelomax|Petelomax]] ([[User talk:Petelomax|talk]]) 23:52, 9 June 2023 (UTC)
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