Fun with Numbers: The Pan-Prime-Digit Cube Hypothesis

[Arno K]

(08-08-2017 06:38 AM)Werner Wrote:  

(08-07-2017 07:09 PM)David Hayden Wrote:  Thus any pan-prime-digit cube must end in 3, 5, or 7.

Or 8.
So that's only 4/10 numbers to test.
If you take the two last digits, it's 24/100

Cheers, Werner

This is what I noticed, too. So I wrote a program for the Prime using lists of usable endings , ran out of memory after the last 6 digits were checked. Now I try to find an improvement.
Arno