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.
Huh?!? You're joking too, arent' you? Can you find many prime numbers amongst the numbers q+2, q+3, ..., q+p, where q is the product of all primes up to p? This is so elementary that it is IIRC on the second or third page of "Hardy and Wright"...
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