Numbers of the form J=2^(2^n) - 1
- Good day all,I am looking at numbers of the form J=2^(2^n) - 1. First of all, has anyone studied these numbers yet?Factors of J are Fermat numbers and J = Pi(2^(2^(n-1))+1, where Pi is the product function. For example, when n =4,J=[2^(2^0)+1]*[2^(2^1)+1][2^(2^2)+1][2^(2^3)+1] = 3*5*17*257.These numbers are also equal to 2*(MMp) +1, where MMp is a double Mersenne number. J is a factor of another set of numbers i'm studying, If there is research on the factors of these numbers, can someone please point the way.Thank you.