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The number of primes is finite
Authors:Miodrag Zivkovic.
Affiliation:Matematicki Fakultet, Beograd
Abstract:For a positive integer $n$ let $ A_{n+1}=sum _{i=1}^n (-1)^{n-i} i!,$ $ ,!n=sum _{i=0}^{n-1} i! $ and let $ p_1=3612703$. The number of primes of the form $ A_n$ is finite, because if $ ngeq p_1$, then $A_n$ is divisible by $p_1$. The heuristic argument is given by which there exists a prime $p$ such that $ p,vert,,!n$ for all large $n$; a computer check however shows that this prime has to be greater than $2^{23}$. The conjecture that the numbers $,!n$ are squarefree is not true because $ 54503^2,vert,,!26541$.

Keywords:Prime numbers   left factorial   divisibility
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