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P,Sq,P (Posted on 2014-07-21) Difficulty: 1 of 5
How many integer squares are "sandwiched" between 2 prime numbers?

  Submitted by Ady TZIDON    
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Solution: (Hide)
(n^2 - 1) =(n-1)(n+1) cannoy be a prime unless n = 2.
So the answer is: only one case i.e. 3,4,5.

Comments: ( You must be logged in to post comments.)
  Subject Author Date
alternate definition of sandwichLarry2014-07-21 11:06:26
SolutionSolutiontomarken2014-07-21 10:04:36
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