==Other radixes== Automorphic numbers are radix dependent, and the description above applies to automorphic numbers in base 10. Using other radixes there are different automorphic numbers. 0 and 1 are automorphic numbers in any radix; automorphic numbers other than 0 and 1 only exist when the radix has at least two distinct prime factors. A single...
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http://en.wikipedia.org/wiki/Automorphic_number
(from the article `number game`) An automorphic number is an integer whose square ends with the given integer, as (25)2 = 625, and (76)2 = 5776. Strobogrammatic numbers read the same ...
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http://www.britannica.com/eb/a-z/a/128
Also known as an automorph, a number n whose square ends in n. For instance 5 is automorphic, because 5
2 = 25, which ends in 5. A number n is called trimorphic if n
3 ends in n. For example 49
3, = 117649, is trimorphic. Not all trim...
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http://www.daviddarling.info/encyclopedia/A/automorphic_number.html
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