#include<iostream>

#include<cstdio>

#include<cstring>

using namespace std;

int const maxn=1e6;

int n,pri[maxn+],cnt;

bool vis[maxn+];

void init()

{

    for(int i=;i<=maxn;i++)

    {

        if(!vis[i])pri[++cnt]=i;

        for(int j=;j<=cnt&&i*pri[j]<=maxn;j++)

        {

            vis[i*pri[j]]=;

            if(i%pri[j]==)break;

        }

    }

}

int main()

{

    init();

    while()

    {

        scanf("%d",&n);

        if(!n)return ;

        for(int i=;i<=cnt&&pri[i]<=n;i++)

        {

            if(!vis[n-pri[i]])

            {

                printf("%d = %d + %d\n",n,pri[i],n-pri[i]);

                break;

            }

        }

    }

}