Primality proof for n = 2582420664331010792443772203:
<p>Take b = 2.
<p>b^(n-1) mod n = 1.
<p><a href=25946288601512170961.html>25946288601512170961 is prime.</a>
<br>b^((n-1)/25946288601512170961)-1 mod n = 873286792677208210565765030, which is a unit, inverse 387092091238768611694661757.
<p>(25946288601512170961) divides n-1.
<p>(25946288601512170961)^2 > n.
<p>n is prime by Pocklington's theorem.