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# Primes and Polynomials from I.S.I. Entrance

Try the problem

This problem of primes and polynomials is from B.Stat, B.Math Entrance.

Let x and n be positive integers such that $1 + x + x^2 + … + x^{n-1}$ is a prime number. Then show that n is a prime number.

Watch the video

Try the problem

This problem of primes and polynomials is from B.Stat, B.Math Entrance.

Let x and n be positive integers such that $1 + x + x^2 + … + x^{n-1}$ is a prime number. Then show that n is a prime number.

Watch the video

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