[ExI] This perfect day...

[Dan TheBookMan]

http://blogs.scientificamerican.com/roots-of-unity/49-ways-to-celebrate-the-most-perfect-day-of-the-year/?WT.mc_id=SA_TW_MATH_BLOG

A little fun with numbers, especially Mersenne primes.

Regards,

Dan
  Sample my latest Kindle book, "The Late Mr. Gurlitt," at:
http://mybook.to/Gurlitt
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