#include <stdio.h>
long fun(int n);
int main()
{
int  m;
scanf("%d", &m);
printf("The result is %ld\n", fun(m));
return 0;
 }
long fun(int n)
{
	int i,result=1;
	int num=2;
	while(num<n)
	{
		for(i=2;i<num;i++)
		{
			if(num%i==0)
			{
				break;
			}
		}
		if(num==i)
		{
			result*=num;
		}
		num++;
	}
	return result;
}