S = list(input())
for i in range(len(S)):
    S[i] = int(S[i])
ans = 0
for i in range(1<<len(S)-1):
    num = 0
    now = S[0]
    for j in range(len(S)-1):
        if i >> j & 1:
            num += now
            now = S[j+1]
        else:
            now *= 10
            now += S[j+1]
    num += now
    prime = 1
    for j in range(2,int(num**0.5)+1):
        if num%j == 0:
            prime = 0
            break
    ans += prime
print(ans)