Enter n for totient

Answer
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φ(11) = 10

↓Steps Explained:↓

Calculate φ(11)

This is known as the totient

Calculate factors for 11

Factors for 11 are 1,11

Factors < 11 with 1 as common factor

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

Build totient list

1,2,3,4,5,6,7,8,9,10

Final Answer

φ(11) = 10
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