(p-1) divides N-1

(p-1) divides (N/p)(p-1)

(p-1) divides (N-1) - (N/p)(p-1)

(p-1) divides (N-1) - N + (N/p)

(p-1) divides -1 + (N/p)

(p-1) divides (N/p) - 1

Kermit

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(p-1) divides N-1

(p-1) divides (N/p)(p-1)

(p-1) divides (N-1) - (N/p)(p-1)

(p-1) divides (N-1) - N + (N/p)

(p-1) divides -1 + (N/p)

(p-1) divides (N/p) - 1

Kermit