m,n = map(int, input().split())
isPrime = [True if i>1 else False for i in range(n+1)]
for i in range(2,int(n**0.5)+1):
    if isPrime[i]:
        num = i*i
        while num<=n:
            isPrime[num] = False
            num += i

print('\n'.join(map(str, [i for i in range(m,n+1) if isPrime[i]])))