‘11 x’ SeriesInformation graphics by Stephanie PosavecBy looking into the background of long multiplication and handmade calculations, American designer Stephanie Posavec has created a really nice set of four infographic posters depicting patterns that occur when multiplying 11 by various strings of numbers.

Read the proper explanation and see the remaining two designs on her website here.

Prime Explorer: Exploring Patterns in Prime Number Spatial Layouts

Prime Explorer [bigblueboo.com], developed by a San Francisco-based software company called Mode of Expression, provides an interactive view of all the prime numbers ranging from 1 to 62,500.