Quote:
Originally Posted by Ale
the number * 3 *, is always after a series chain of numbers, example 2 * 4 * 5, but at 8 is not yet chain of numbers, see 2 * 4 * 5 * 7 * 8, there isn't 6.
I thought, example 2 * 4 * 5 repeated three times, 2 * 4 repeated two times , an so up .

okay, so what are the specifics of the algorithm, and what is your level of knowledge of:
Va bene, quindi quali sono le specifiche dell'algoritmo, e qual รจ il vostro livello di conoscenza di:
1) Sieve techniques/tecniche di Sieve
2) remainder math/resto matematica
3) Prime numbers/numeri primi
4) Factorials/fattoriali
5) Programming/Programmazione