def A(n):
if n % 2 == 0 or n % 5 == 0:
return 0
for k in divisorList(totient(9*n)):
if pow(10, k, 9*n) == 1:
return k
from numbertheory import primeList
import numbertheory
def residues(n, m):
for i in range(m):
yield pow(i, n, m)
n = 13
for m in primeList(1000):
t = numbertheory.totient(m)
r = list(residues(n, m))
r = list(set(r))
r.sort()
if m % n == 1 and numbertheory.isPrime(m):
print(m , len(r), r)
def teration(a, n, m): if n == 0 or m == 1: return 1 return pow(a, teration(a, n-1, totient(m)),m)
from numbertheory import totient
s = 0
for x in range(2, 1000000 + 1):
s += totient(x)
print(s)
