 @name toColorPart
 @methodOf Number#
 
+@type String
 @returns Hexidecimal representation of the number
-@type String
 
 <code><pre>
    255.toColorPart()

@name constrainRotation
@methodOf Number#

@returns This number constrained between -PI and PI.
@type Number
###
Number::constrainRotation = ->
  target = this

@name primeFactors
@methodOf Number#

@type Array
@returns An array containing the factorization of this number.

<code><pre>
   60.primeFactors()
