def czy_pierwsza(n):
d = 2
while d * d <= n:
if n % d == 0:
return False
d += 1
return True
def pierwsza(n):
numer = 0
i = 2
while numer != n:
if czy_pierwsza(i):
numer += 1
i += 1
return i - 1
print(pierwsza(7))
print(pierwsza(25))
ZGVmIGN6eV9waWVyd3N6YShuKToKCWQgPSAyCgl3aGlsZSBkICogZCA8PSBuOgoJCWlmIG4gJSBkID09IDA6CgkJCXJldHVybiBGYWxzZQoJCWQgKz0gMQoJcmV0dXJuIFRydWUKCQpkZWYgcGllcndzemEobik6CgludW1lciA9IDAKCWkgPSAyCgl3aGlsZSBudW1lciAhPSBuOgoJCWlmIGN6eV9waWVyd3N6YShpKToKCQkJbnVtZXIgKz0gMQoJCWkgKz0gMQoJcmV0dXJuIGkgLSAxCgkKcHJpbnQocGllcndzemEoNykpCnByaW50KHBpZXJ3c3phKDI1KSkKCgo=