BEGIN
    FOR number FROM 500 TO 599 DO
        IF number is_prime(number) THEN
            PRINT number
        END IF
    END FOR

FUNCTION is_prime(n)
    IF n <= 1 THEN
        RETURN FALSE
    END IF
    FOR i FROM 2 TO √n DO
        IF n MOD i == 0 THEN
            RETURN FALSE
        END IF
    END FOR
    RETURN TRUE
END FUNCTION