How to check whether a integer of type mpz_t is a palindrome

Torbjorn Granlund tg at
Wed Feb 8 11:24:19 CET 2012

Matevž Markovič <ivwcorporation.matevz at> writes:

  One last question -- why have you, Torbjorn, proposed exactly 30 (in
  d^(n-30) and in A mod d^30) and not some other number? I would really like
  to know.
I pulled that number out of a hat.

If you make it too large, computations would become slower.  If you make
it too small, you would get false positives.


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