If it is unknown, how are we supposed to know it?
There must be a least unknown prime, so the next prime below that must (?) be known, sap pk.
The next prime, pk+1 , must be the least unknown prime - so what is it, approximately?
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2 is the smallest prime number. It is co-prime with every odd number.
The smallest prime number after 200 is 211.
3 is the smallest odd prime number.
The smallest prime number is 2.
11 is the 5th smallest prime #