#include <stdio.h>
long int w,nr,exp[1000][1000],n,i,p,k,x;
long long q[10000],j,r=0;

int main()
{
//exp[nrdescompus,divizorul]

freopen("factoriale.in","r",stdin);
freopen("factoriale.out","w",stdout);
scanf("%ld %ld",&n,&k);
for (i=2;i<=97;i++)
{ if (exp[i][1]==0)
    for (p=i;p<=100;p++)
      { for (x=p,w=0;x%i==0;) {x=x/i;w++;}
        exp[p][i]=exp[p-1][i]+w;if (w!=0) exp[p][1]=1;
        //printf("exp[%ld,%ld]=%ld ",p,i,exp[p][i]);
	  }
  exp[i][1]=0;
}
 for (i=1;i<=n;i++) 
  {scanf("%ld",&x);
   for (p=2;p<=x;p++) exp[0][p]+=exp[x][p];}
q[1]=1;nr=1;
//inmultesc numerele de pe linia 0 a exp care %k!=0

 for (i=2;i<=97;i++) 
 { exp[0][i]=exp[0][i]%k;//printf("%ld de la %ld ",exp[0][i],i);
    if (exp[0][i]!=0) 
	for (p=exp[0][i]+1;p<=k;p++) 
		{ r=0; for (j=1;j<=nr;j++) 
		       { q[j]=q[j]*i+r; r=q[j]/10;q[j]=q[j] % 10;  }
          for (;r;) {nr++;q[nr]=r%10;r/=10;}
		}
  }
 
  for (i=nr;i>=1;i--) printf("%lld",q[i]);
return 0;}