Loading ...
Sorry, an error occurred while loading the content.
 

10^a+a, 10^b-b, 2^x+x, and 2^y-y

Expand Messages
  • Milton Brown
    Has anyone studied primes of this form. Here are some: 10^a+a a = 1, 9, 69, 313, 451 10^b-b b = 3, 23, 171, 903 2^x+x x = 1, 3, 5, 9, 15, 39, 75, 81,
    Message 1 of 1 , Jun 29, 2001
      Has anyone studied primes of this form.
      Here are some:

      10^a+a a = 1, 9, 69, 313, 451

      10^b-b b = 3, 23, 171, 903

      2^x+x x = 1, 3, 5, 9, 15, 39, 75, 81, 89, 317, 791, 735, 1311

      2^y-y y = 3, 9, 13, 19, 21, 55, 261

      Notice the prime "cousins" 2^3+3 and 2^3-3.

      Milton L. Brown
      miltbrown@...



      [Non-text portions of this message have been removed]
    Your message has been successfully submitted and would be delivered to recipients shortly.