Primality proof for n = 298882421:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=14944121.html>14944121 is prime.</a>
<br>b^((n-1)/14944121)-1 mod n = 1048575, which is a unit, inverse 168996585.
<p>(14944121) divides n-1.
<p>(14944121)^2 > n.
<p>n is prime by Pocklington's theorem.