Instructions:
Select a number from the menu, call it n. The set of
all numbers that are prime relative to n appears in a row
that is labeled Z*n. Select one of the numbers, call
it a. Compute a^{n1} by clicking on the
Multiply button until the count n1 is reached.
The answer in the result field should be 1.
Observe:
 If n is prime there is a number in Z*n, called
a generator and denoted g, such that g^{i},
1≤i<n, is unique, and an element of Z*n
and g^{n1} is 1. For a generator the result:
field will not display 1 until the count is n1. A generator
for n = 19 is 10.

