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Sum Powers Sum Square II (Posted on 2009-07-08) Difficulty: 3 of 5
Determine all possible positive integer(s) P such that:

21994 + 21998 + 21999 + 22000 + 22002 + 2P

is a perfect square.

See The Solution Submitted by K Sengupta    
Rating: 4.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
oops slight error | Comment 4 of 6 |

it apears in the first 3 posts both myself and JayDeeKay made a slight error by not including 2^2002 in our calculations.

Doing so results in

2^1994(1+2^4+2^5+2^6+2^8)+2^p

369*2^1994+2^p

2^1994*(369+2^(p-1994))

and so far the only solution I can find is with p-1994=8 thus

p=2002


  Posted by Daniel on 2009-07-09 23:54:40
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