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#!python3
import sys
from sympy.ntheory import factorint, isprime
import unittest
def is_attractive(what):
factors = factorint(int(what))
return (isprime(sum(factors.values())))
# TESTS
class PrimeTest(unittest.TestCase):
def test_20(self):
self.assertEqual(is_attractive(20),True)
def test_128(self):
self.assertEqual(is_attractive(128),True)
def test_256(self):
self.assertEqual(is_attractive(256),False)
if __name__ == "__main__":
unittest.main()
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