puzzles (8-15-08)
Wyverex
wyverex.cypher at gmail.com
Fri Aug 15 08:30:59 PDT 2008
1) Consider the number 142857. We can right-rotate this number by
moving the last digit (7) to the front of it, giving us 714285.
It can be verified that 714285=5*142857.
This demonstrates an unusual property of 142857: it is a divisor of its
right-rotation.
Find the digits of the set of all integers n, 11 < n < 10^100, that have
this property.
2 and 3 from the other day are time consuming but are good practice for
new programmers!
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