2 3 x 15 7 July 8, 2019 16 32 64 128 2 *(- x 3 7x 15 X 3 x 2 7x 15 0 1 5 x 2 3 )= 7 15 5 3 5 4 2 3 x 2 7 15 2 15 7 27 x 3 3 11 2x 1 5 x 2 3 x 7 15 3 2 3 x 15 71 2 x 3 x 15 7 is a composite number 2 ∙ (- x 3 7x 15 2 5 =( x 3 )/( 7x 15 2 x 3 )- 3 2x 7 )= 15 4 8 2 x 3 7 15 2 x 3 1 7x 15 3 3 2 x 11 14 x 7 15 3 5 x 2 15 7 30
