>>21331551 pb
When you don't understand something, just say so. The key word here is 'can' and the context is reducing the brute force mechanism for factoring.
In base 2, primes 'can' occur periodically as odd numbers.
In base 3, primes can occur at 6x+-1.
Jones factorization by period proxy and the Shor algorithm for factoring on a quantum computers use the rank of the period to determine factors of a smaller number, then applied to the larger.
Another way to see this is an interference pattern of fractal waves on a standard multiplication table.