#include <iostream>
#include <cmath>
bool esPrimo(int numero) {
if (numero <= 1) return false;
if (numero <= 3) return true;
if (numero % 2 == 0 || numero % 3 == 0) return false;
for (int i = 5; i * i <= numero; i += 6) {
if (numero % i == 0 || numero % (i + 2) == 0) return false;
}
return true;
}
int main() {
int N;
std::cout << "Ingrese el valor de N: ";
std::cin >> N;
for (int i = 2; i <= N; ++i) {
if (esPrimo(i)) {
std::cout << i << " ";
}
}
std::cout << std::endl;
return 0;
}
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