
New record prime: 2^{74,207,281}1 with 22,338,618 digits by Cooper, Woltman, Kurowski, Blosser & GIMPS (7 Jan 2016). 

What is small? Depends on your
context, but since this site focuses on titanic prime (those with more than
1000 digits), any prime with less than 1000 digit is small. Here we
provide lists of the first fifty million primes as well as a few hundred proven
small primes (10300 digits or so) to test various algorithms.

Another prime page by Chris K. Caldwell <caldwell@utm.edu> 