More properties of Pythagorean triples
It is found that cn - a n - bn is always divisible by (n/2)3 , where n
is even and (a,b,c) are any Pythagorean triples.
It is found that cn - a n - bn is divisible by a2 and b2 for all
even values of n .>2
e.g., c4 - a4 - b4 = 2a2 b2 and c6 – a6 – b6 = 3a2 b2 c2
All the members of a Pythagorean triple cannot be odd, since sum
of two odd squares is even which cannot be equal to square of the
other odd number.
It implies that all the members of any triple cannot be prime.
All of them can be even. Such Pythagorean triples will always be
reducible.
All of them cannot be square numbers, cube numbers or in general
equal power numbers with power n >1. If (a2 , b2 , c2 ) exists as a
possible set of Pythagorean triple, then the Pythagorean relation
demands that a4 + b4 = c4 which is not possible as it is against
the Fermat’s last theorem.
1 cannot be a member in any Pythagorean triples. If 1 is a member
( lowest) then 1 = c2 - b2 or 1 = (c+b)(c-b). The mathematical
description says that the product of a number and its reciprocal will
always give unity. Since c-b cannot be a fraction and c2 – 1 cannot
be a square number , for any integral values of c and b the product
cannot be made to unity.