Minimum of n ?

x,y and n are positive integers, find minimum of n, such that

123456789*x*x - 987654321*y*y =n

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- March 28th 2013, 04:38 AMmk168Minimum of n?
Minimum of n ?

x,y and n are positive integers, find minimum of n, such that

123456789*x*x - 987654321*y*y =n - March 28th 2013, 06:36 AMHallsofIvyRe: Minimum of n?
Since 123456789 and 987654321 have greatest common factor 9, any such n must be a multiple of 9.