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

[David Hayden]

I'm working through the 17 digit suffixes now. The code now reads/writes input/ouput to files. I decompress the input on the fly and similarly compress the output. Even compressed, the file of 16 digit suffixes is 8GB.

The number of possible suffixes seems to be growing by a factor of about 4 for each new digit added. I had hoped that it would start shrinking and eventually drop to zero but that doesn't seem to be the case.

I've made zero progress on a mathematical proof. It occurs to me that the digits are obtained by remainder operations similar to the way some encryption algorithms work. So a mathematical proof might be impossible.

Joe Horn, how do you come up with these torture devices?

Dave