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Forum: And now for something completely different 2020-12-23, 01:56
Replies: 8
Views: 1,230
Posted By Dr Sardonicus
:tu: I note the following analogs to...

:tu:

I note the following analogs to corresponding results for Leyland numbers:

Let N = x^y*y^x. If x and y are both odd, N is odd, so N - 1 and N +1 are both even. If N > 3, both are...
Forum: And now for something completely different 2020-12-22, 14:12
Replies: 8
Views: 1,230
Posted By Dr Sardonicus
The limits may be "tiny" by today's standards,...

The limits may be "tiny" by today's standards, but are way beyond where I was willing even to try to look.

I just ran a simpleminded script that I reckoned would take seconds or minutes rather...
Forum: And now for something completely different 2020-12-22, 02:25
Replies: 8
Views: 1,230
Posted By Dr Sardonicus
I suggest you upgrade your abacus. A nearly...

I suggest you upgrade your abacus.

A nearly mindless numerical sweep with Pari-GP turned up the following results. I say "nearly" mindless because for x = 11 and 13, I did exclude odd values of...
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