create or replace procedure pr_prime(in_num in number)
is
type arr_prime is table of number INDEX BY BINARY_INTEGER;
my_arr_prime arr_prime;
n_cur_mult number(10):=1;
n_prime_1 number(10):=1;
n_prime_2 number(10):=2;
n_max number(10):= floor((in_num+1)/6);
n_arr_ind number(10):=1;
b_prime number(1):=0;
n_arr_max number(10):=2;
begin
my_arr_prime(1):=2;
my_arr_prime(2):=3;
for i in 1..n_max loop
n_prime_1 := i*6-1;
n_prime_2 := i*6+1;
n_cur_mult := ceil(sqrt(n_prime_2));
for j in 1..2 loop
if j =2 then
n_prime_1:= n_prime_2;
end if;
if n_prime_1 > in_num then
exit;
end if;
n_arr_ind:=1;
b_prime :=0;
while n_arr_ind <= n_arr_max and my_arr_prime(n_arr_ind)<= n_cur_mult loop
if mod(n_prime_1, my_arr_prime(n_arr_ind)) =0 then
b_prime :=1;
exit;
end if;
n_arr_ind := n_arr_ind+1;
end loop;
if b_prime = 0 then
n_arr_max := n_arr_max+1;
my_arr_prime(n_arr_max) := n_prime_1;
end if;
end loop;
end loop;
--for i in 1..n_arr_max loop
--dbms_output.put_line(my_arr_prime(i));
--end loop;
end;