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Logtalk - Object oriented extension to Prolog
Release 2.28.2

Copyright (c) 1998-2006 Paulo Moura.  All Rights Reserved.
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% start by loading the loading the example:

| ?- logtalk_load(primes(loader)).
...


% calculate the prime numbers in a given interval using a single thread:

| ?- primes::st_prime_numbers(1, 200000, Primes).

Primes = [199999, 199967, 199961, 199933, 199931, 199921, 199909, 199889, 199877|...] 

Yes


% calculate the prime numbers in a given interval by splitting the interval 
% in two sub-intervals and using a thread pere interval:

| ?- primes::mt_prime_numbers(1, 200000, Primes).

Primes = [199999, 199967, 199961, 199933, 199931, 199921, 199909, 199889, 199877|...] 

Yes