Calculate φ(25)
This is known as the totient
Calculate factors for 25
Factors for 25 are 1,5,25
Factors < 25 with 1 as common factor
Build totient list
1,2,3,4,6,7,8,9,11,12,13,14,16,17,18,19,21,22,23,24
Final Answer
φ(25) = 20
Calculate φ(25)
This is known as the totient
Factors for 25 are 1,5,25
1,2,3,4,6,7,8,9,11,12,13,14,16,17,18,19,21,22,23,24
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