Euler7.scala

object Euler7 extends App {

    val primes = 2 #:: isPrime(3)

    def isPrime(n: Int) : Stream[Int] =
        if (primes.takeWhile(p => p*p <= n).exists(n % _ == 0)) isPrime(n + 2)
        else n #:: isPrime(n + 2)

    println(primes(10000))
}