Quote:
Originally Posted by masser

Note that
http://primes.utm.edu/primes/search.php?MinAge=2860 and
http://primes.utm.edu/primes/search.php?MinAge=2865 give slightly different results (
as of the time I post this).
Perhaps what you're getting is not the 20 oldest primes on the Top 5000 list, but the 20 largest primes older than 2860, or 2865, days, respectively? In that case, a few days from now
http://primes.utm.edu/primes/search.php?MinAge=2860 and
http://primes.utm.edu/primes/search.php?MinAge=2865 may return identical results.