691c7565_erators_and_Eratosthenes_Sieve_Summary_of_Bitwise_Operators_operator
[coding] >> [notes] shifts LHS right by no. of bits in RHS [operator] 
right shift
l e f t s h i f t
r i g h t s h i f t
b i t w i s e A N D
b i t w i s e O R
e x c l u s i v e O R
t w o s c o m p l e m e n t