in reply to
Re^3: a close prime number

in thread a close prime number

You can do better than using the arbitrary range of +100/-100, (which isn't going to be good enough when your numbers get larger).

Really? Is there a range of 200 consecutive numbers within which there are no primes? My understanding was that they appeared with regular density, no matter how high you climbed.

Update:

And I get to answer my own question. I Googled up this webpage. It's 210 numbers to the next prime from 20831323.

**Caution:** Contents may have been coded under pressure.