May 24th, 2017, 10:53 PM  #1 
Senior Member Joined: Nov 2015 From: hyderabad Posts: 206 Thanks: 2  Gaussian integers
Pick up prime elements of the ring of Gaussian integers $\displaystyle G = {a+ib/a,b \in R}$ from the following: A) 2 B) 3 C) 7 D) 13 My answers : Options B & C please check and let me know... Thanks. Last edited by skipjack; May 24th, 2017 at 11:21 PM. 
May 24th, 2017, 11:23 PM  #2 
Global Moderator Joined: Dec 2006 Posts: 18,137 Thanks: 1415 
For Gaussian integers, $a$ and $b$ are integers. You answered correctly. 
May 24th, 2017, 11:24 PM  #3 
Senior Member Joined: Nov 2015 From: hyderabad Posts: 206 Thanks: 2  

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