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#### ATroelstein

##### New member

- Jun 30, 2012

- 15

$$

8^{7} mod 187

$$

I have determined that:

$$

\phi(187) = \phi(11*17) = 160

$$

and

$$

8^{7} = 8^{4} * 8^{2} * 8^{1}

$$

but am unfortunately confused about how to now proceed beyond this point. Thank you.