John, >> However named, this is a hashing scheme.
Okay - If converting a number from a system based on whatever to a system based on a different number is hashing...... maybe my english needs amending >> Long established number-theoretic results then predict clustering of these hash values at the prime divisors of a composite m. I do not argue that and I understand the value of prime numbers, but I highly doubt that the simple occurrence of a divide operation does automatically make the conversion a hashing algorithm. -- Martin Pi_cap_CPU - all you ever need around MWLC/SCRT/CMT in z/VSE more at http://www.picapcpu.de