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Excellent numbers (Posted on 2017-04-08) Difficulty: 3 of 5
An excellent number n has an even number of digits and, if you split the number into the front half a and the back half b, then b^2 − a^2 = n.
For example, 3468 = 68^2 − 34^2.
The only two-digit excellent number is 48 and the only four-digit
excellent number is 3468.

There are eight six-digit excellent numbers.

List them.

Bonus: List all 10-digit excellent numbers.

Source: Project Euler.

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
Hints/TipsGoing furtherBrian Smith2017-04-09 14:59:16
Solution12 digit excellenceBrian Smith2017-04-08 21:43:59
Solutioncomputer solution: 6-, 8- and 10-digitsCharlie2017-04-08 12:17:11
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