Prime Numbers are Odd

Inspired by a favorite put-down by William LaSor ca 1967.
Copyright ©1997 by Paul Niquette. All rights reserved.

All Odd Numbers are Prime

The Engineering Proof...


  • One is a prime number.
  • Three is a prime number.
  • Five is a prime number.
  • Seven is a prime number.
(Nine is not a prime number, 
but that is merely an error in 
the experiment.)
  • Eleven is a prime number.
  • Thirteen is a prime number.
How many errers do you see in this analysis?

 
Can you show that 90% of all odd decimal
numbers of the form
ddd...d 
are not prime?

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