def enumerate_primes(n):
    if n <= 1:
        return []
    A = [1, 7, 11, 13, 17, 19, 23, 29]
    thres = (n + 29) // 30
    sieve = [255] * (thres + int(n ** 0.5) + 10)
    ntoi = lambda i: (i >> 2) + (not (~i&19))

    sieve[0] ^= 1
    i = 0
    flg = 1
    while flg:
        if sieve[i] != 0:
            for j in range(8):
                if sieve[i] >> j & 1:
                    p = i * 30 + A[j]
                    if (p * p > n):
                        flg = 0
                        continue
                    q = [0] * 8
                    r = [0] * 8
                    s = 0
                    for k in range(8):
                        x = p * (i * 30 + A[k])
                        q[k] = x // 30
                        r[k] = ntoi(x - 30 * q[k])
                    while q[0] + s < thres:
                        sieve[q[0] + s] &= ~(1 << r[0])
                        sieve[q[1] + s] &= ~(1 << r[1])
                        sieve[q[2] + s] &= ~(1 << r[2])
                        sieve[q[3] + s] &= ~(1 << r[3])
                        sieve[q[4] + s] &= ~(1 << r[4])
                        sieve[q[5] + s] &= ~(1 << r[5])
                        sieve[q[6] + s] &= ~(1 << r[6])
                        sieve[q[7] + s] &= ~(1 << r[7])
                        s += p

        i += 1
    primes = [2, 3, 5, 7, 11, 13, 17, 19, 23, 29]
    for i in range(1, thres):
        for j in range(8):
            if sieve[i] >> j & 1:
                primes.append(i * 30 + A[j])
    while primes[-1] > n:
        primes.pop()
    return primes

m = int(input())
if m == 0:
    m += 998244353

A = []
primes = enumerate_primes(300)[:60]
ind = 0
if m & 1:
    A.append(primes[ind])
    ind += 1

for i in range(1, 30):
    if m >> i & 1:
        p = primes[ind]
        ind += 1
        c = i
        x = p
        while c > 0:
            ok = True
            for q in primes:
                if q != p and x % q == 0:
                    ok = False
                    break
            if ok:
                c -= 1
                A.append(x)
            x += p
        A.append(primes[ind])
        ind += 1

print(len(A))
print(*A)