Quote:
Originally Posted by Raman
=> is being the identity element over Z/100Z

I'm not sure what you're saying here. 2^20 = 76 is not the identity element in Z/100Z. 2 divides 100, so no positive power of 2 can be the identity.
Quote:
Originally Posted by Raman
=> is Not being the identity element at all

No, the identity is 3^5000 = 1.