[tess0r]

You can fiddle with the displayed time (by editing the url) -- it's fun to see that (very) early timestamps have much greater chance to be a prime number.

Also, sometimes, you can find "twin primes". https://tessi.github.io/primetime/?t=1500000000 has such a twin-pair in the center of the screen (the twins are 1499999927 and 1499999929).

[sdoering]

I was interested when 10^n events would happen and ran in a nice litte bug. I like to believe that this marks the end of all times: https://tessi.github.io/primetime/?t=10000000000000

[XaspR8d]

Javascript's maximum date is Sat, 13 Sep 275760 (=8640000000000), so you've actually gone some ~43,000 years past the end of all time.