Par numbers are
integers. The term separates all integers into four sets of numbers that have different characteristics;
The sets are labeled: Par, Par1, Par2, and Par3 according to their
remainder when divided by four.
Par and Par2 numbers are even; the others are odd.
The Natural origin of Par numbers derives from the four sinusoidal cycles.
Each of the four sets of Par Numbers is a set of congruent numbers that
have the same remainder when divided by the modulus: four.