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28 changes: 28 additions & 0 deletions numeros_primos.java
Original file line number Diff line number Diff line change
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import java.util.Scanner;

public class numeros_primos {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.print("Ingresa un número entero positivo: ");
int num = sc.nextInt();
boolean esPrimo = true;

if (num <= 1) {
esPrimo = false;
} else {
for (int i = 2; i <= Math.sqrt(num); i++) {
if (num % i == 0) {
esPrimo = false;
break;
}
}
}

if (esPrimo) {
System.out.println(num + " es un número primo.");
} else {
System.out.println(num + " no es un número primo.");
}
sc.close();
}
}