Question

20, Let p be prime. Show that p X n, where n is a positive integer, if and only if ф (np)s (p-1)ф (n).

please show converse as well
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Answer #1

20. epevator fhat is pvi»a. to n pro-p-1 the prime You nhon, So þisa if 、C and rme ton gf@p) = ø(x) 9Kワ ;fndong f

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please show converse as well 20, Let p be prime. Show that p X n, where...
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