(a) Verify that 2 is a primitive root of 19, but not of 17.(b) Show that 15 has no
Chapter 8, Problem 9(choose chapter or problem)
(a) Verify that 2 is a primitive root of 19, but not of 17.(b) Show that 15 has no primitive root by calculating the orders of 2, 4, 7, 8, 11, 13, and14 modulo 15.
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