Fun with Numbers: The Pan-Prime-Digit Cube Hypothesis
08-21-2017, 08:39 PM
Post: #51
 David Hayden Senior Member Posts: 391 Joined: Dec 2013
RE: Fun with Numbers: The Pan-Prime-Digit Cube Hypothesis
(08-21-2017 03:39 PM)pier4r Wrote:  Could you share the details?
The code is written in C++. The idea is to build up lists of larger and larger suffixes to possible solutions. The input file is text. The first line is the number N of digits in the OUTPUT. This line is followed by a bunch of lines that contain all possible suffixes of length N-1. It writes to the output a file in the same format, but for one larger suffix size. You can kick start it with the input file:
Quote:1
0
Which generates as its output:
Code:
2 3 5 7 8
This means that any solution must end in 3,5,7, or 8. This file can be used as the input file to 2-digit suffixes. The output of that run can find 3 digit suffixes etc.

If the program finds a solution along the way, it writes it to the standard error output.

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