OrderFFE( z )
OrderFFE
returns the order of the element z in a finite field. The
order is the smallest positive integer i such that z^i
is 1.
The order of the zero in a finite field is defined to be 0.
gap> OrderFFE( Z(16)^7 ); 15 gap> OrderFFE( Z(16)^5 ); 3 gap> OrderFFE( Z(27)^11 ); 26 gap> OrderFFE( Z(625)^13 ); 48 gap> OrderFFE( Z(211)^0 ); 1
GAP 3.4.4