# coding=utf-8
''' 2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder.
What is the smallest positive number that is evenly divisible by all of the numbers from 1 to 20? '''

from time import time

gcd = lambda x, y: (y == 0) and x or gcd(y, x % y)


def p1(maxx = 20):
  maxx += 1
  
  num = []
  for i in range(maxx): num.append(i)
  
  for i in range(2, maxx):
    if num[i] > 1:
      for j in range(i + 1, maxx):
        if num[j] % num[i] == 0: num[j] /= num[i]
  
  total = 1
  for i in num[1 : maxx]: total *= num[i]
  #print num
  print total


def p2(maxx = 20):
  n = 2
  for i in xrange(3, maxx + 1):
    if n % i != 0:
      n = n * i / gcd(n, i)
  return n

#p1(20)

print p2(50000)