`gf2nton'
---------

gf2nton(M)
     :: GF(2^n) $B$N85$r<+A3?t$KJQ49(B

RETURN
     $BHsIi@0?t(B

M
     GF(2^n) $B$N85(B

   * `gf2nton' $B$N5UJQ49$G$"$k(B.

     [1] setmod_ff(x^30+x+1);
     x^30+x+1
     [2] N=gf2nton(2^100);
     (@^100)
     [3] simp_ff(N);
     (@^13+@^12+@^11+@^10)
     [4] gf2nton(N);
     1267650600228229401496703205376
     [5] gf2nton(simp_ff(N));
     15360

$B;2>H(B
     *Note `gf2nton': gf2nton

