Random prime performance


    * Math::Prime::Util

       0.003  (prob)  0.04 (ST)   0.13 (Maurer)     256-bit
       0.057  (prob)  0.24 (ST)   0.64 (Maurer)    1024-bit
       0.56   (prob)  1.0  (ST)   4.8  (Maurer)    2048-bit
       6.09   (prob)  8.2  (ST)  31.9  (Maurer)    4096-bit

    * Perl6/MoarVM with current is-prime (prob):

       0.026   256-bit
       0.33   1024-bit
       2.0    2048-bit
      14.9    4096-bit