# Sundaram's Sieve

Issue 50March 2009

### Step 2

Show that if *N* lies in the array, then 2*N* + 1 is not prime.

Got it, on to the next step;

I'm stuck, give me a hint;

Back to the main article.

March 2009

Show that if *N* lies in the array, then 2*N* + 1 is not prime.

Got it, on to the next step;

I'm stuck, give me a hint;

Back to the main article.