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 * $2^n \pm 1$ for $n 100$ [http://www.euronet.nl/users/bota/medium-p.htm]  * $2^n \pm 1$ for $1200 < n < 10000$ [http://www.euronet.nl/users/bota/medium-p.htm]
  1. a^n \pm 1 for a = 2, 3, 5, 6, 7, 10, 11, 12 and large exponents n [http://homes.cerias.purdue.edu/~ssw/cun/index.html]

  2. a^n \pm 1 for a ≤ 13 and a not a perfect number [http://wwwmaths.anu.edu.au/~brent/factors.html]

  3. 2^n \pm 1 for 1200 < n < 10000 [http://www.euronet.nl/users/bota/medium-p.htm]

  4. 10^n \pm 1 for n ≤ 100 [http://www.swox.com/gmp/repunit.html]

  5. p^p \pm 1 where p is a prime number and p < 180. [http://homes.cerias.purdue.edu/~ssw/bell/r1]

  6. 2^{2^n} + 1 (Fermat numbers) [http://www.prothsearch.net/fermat.html]

  7. 2^{3^n} \pm 1 [http://www.alpertron.com.ar/MODFERM.HTM]

factorization_of_integers_of_special_forms (last edited 2008-11-14 13:41:51 by localhost)