JONATHAN

   55  1, 5, 11, 55  1x55=55 2x55=110 3x55=165 4x55=220 5x55=275 6x55=330 7x55=385 8x55=440 9x55=495 10x55=550 

55 5 11  5x11=550 55 is a composite #. 55 only have 4 factors. 55 is my secant favorite number.

  