How would I go about figuring out how many units are in Zeta 230?
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by zeta 230, do you mean the ring of intergers modulo 230? if so, the units are the invertible elements, ie 1, 3, 77, 7 , 33 ......
Originally Posted by Purslow by zeta 230, do you mean the ring of intergers modulo 230? if so, the units are the invertible elements, ie 1, 3, 77, 7 , 33 ...... Why not just say it? In general where is the number of things less than which are relatively prime to it.
Yes, the ring of integers mod 230. How do I find out the number of units (inverses for the product) without actually going through them all?
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