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Just showing those entries submitted by 'Rupinski': (Click here to show all) 11=1+2+8 and the only known values of n for which (p(n)^p(n)1)/(p(n)1) is prime are n=1,2,8, and 11. [Rupinski]The smallest prime p such that 6p + 1 do not form a twin prime pair. [Rupinski] There are exactly 11 positive odd integers N that cannot be expressed as the sum of two coprime composite integers, both of which are less than N. [Rupinski]
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