l totient of 12
Enter n for totient
Answer
φ(12) = 4


Steps Explained:

Calculate φ(12)

This is known as the totient

Calculate factors for 12

Factors for 12 are 1,2,3,4,6,12

Factors < 12 with 1 as common factor

#Factor ListMatching Factors Totient List?
111Y
21,21,2N
31,31,3N
41,2,41,2,4N
51,51Y
61,2,3,61,2,3,6N
71,71Y
81,2,4,81,2,4N
91,3,91,3N
101,2,5,101,2N
111,111Y

Build totient list

1,5,7,11

Final Answer

φ(12) = 4

Related Calculators:  Prime Numbers  |  Factorization  |  Fraction Cancellation Property