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Product of consecutive (Posted on 2024-09-11) Difficulty: 3 of 5
Find all integers n such that n4-8n+15 is product of two consecutive integers.

No Solution Yet Submitted by Danish Ahmed Khan    
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Some Thoughts some | Comment 1 of 3
for n=1:9999
  v=n^4-8*n+15;
  div=divisors(v);
  l=length(div)/2;
  if l==round(l)
  
  if div(l+1)-div(l)==1
    disp([n v])
    disp([div(l:l+1)])
    disp(' ')
  end
   
  end
end

finds

     3    72   n and the value of the expression
     8     9   the two consecutive factors to make the expression
 
     5   600   n and the value of the expression
    24    25   the two consecutive factors to make the expression
 

  Posted by Charlie on 2024-09-11 09:48:31
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