#include <stdio.h>


long int xx,a,b;
char x[20000],y[20000],z[20000];


int getCifra(char *a, int i){
  if (i>a[0])
    return 0;
  else
    return a[i];
}


long int cmmdc(long int a, long int b) {
  long int r;
  while (b!=0) {
    r = a % b;
    a=b;
    b=r;
  }
  return a;
}


void suma(char *a, char *b, char *c) {
  long int t = 0,max;
  max = a[0];
  if (max<b[0]) max=b[0];
  for (int i=1;i<=max;i++) {
    int aux = getCifra(a,i)+getCifra(b,i)+t;
    c[i]=aux%10;
    t=aux/10;
  }
  if (t==1) {
    c[0]=max+1;
    c[max+1]=1;
  } else {
    c[0]=max;
  }
}


void mul(char *a, int b, char *c) {
  long int t = 0,max;
  max = a[0];
//  if (max<b[0]) max=b[0];
  for (long int i=1;i<=max;i++) {
    int aux = getCifra(a,i)*b+t;
    c[i]=aux%10;
    if (c[i]>1) {
      c[0]=i;
      return;
    }
    t=aux/10;
  }
  c[0]=max;
  while (t!=0) {
    c[0]++;
    c[c[0]]=t%10;
    t=t/10;
  }
}

int verif01(char *a){
  int i;
  for (i=1; i<=a[0]; i++) {
    if (a[i]>1)
      return 0;
  }
  return 1;
}


void atrib(char *a,char *b){
  for (int i=0;i<=b[0];i++) {
    a[i]=b[i];
  }
}


int main(){
  int n,i;
/*  x[0]=3;
  x[1]=0;
  x[2]=0;
  x[3]=1;*/
  FILE *f = fopen("multiplu.in","r");
  fscanf(f,"%ld %ld",&a, &b);
  fclose(f);
  x[0]=0;
  xx=a*b/cmmdc(a,b);


/*  xx ->1    term 1, 0
       2         5, 0
       3         7, 0
       4         5, 0
       5         2, 4, 6, 8, 0
       6         5, 0
       7         1, 0
       8         5, 0*/


  int uc = xx/10;
  while (xx!=0) {
    x[0]++;
    x[x[0]]=xx%10;
    xx/=10;
  }
//  unu[0]=unu[1]=1;
  i=2;
  atrib(z,x);

  while (!verif01(x)){
//    suma(x,unu,y);
    mul(z,i,x);
//    atrib(x,y);
    i++;
  }



  FILE *g = fopen("multiplu.out","w");
  for (i=x[0];i>0;i--){
    fprintf(g,"%d",x[i]);
  }
  fclose(g);
  return 0;
}