
P = import primesToA m = sieve 3 ( array ( 3, m ) | a ! p = sieve ( p + 2 ) $ a // ] | otherwise = sieve ( p + 2 ) a we can directly generate the multiples of a prime p by counting up from it in increments of p, resulting in a variant of the sieve of Eratosthenes. test each new candidate number for divisibility by that prime, giving rise to a kind of trial division algorithm or b. To find out a prime's multiples we can either a. those representable as product of two natural numbers greater than 1. Non-prime numbers are known as composite, i.e. In mathematics, amongst the natural numbers greater than 1, a prime number (or a prime) is such that has no divisors other than itself (and 1).

12 Testing Primality, and Integer Factorization.

10 Using IntSet for a traditional sieve.7.2 Using Page-Segmented ST-Mutable Unboxed Array.

6.3 Calculating Primes in a Given Range.6.2 Calculating Primes Upto a Given Value.
