Question 201146
usually  we  use  a  "factor  tree" to  better  visualize  (  please  excuse ,,,,)
.
,,,,,,,,,,,,,,,,,,,,,,,,,120
,,,,,,,,,,,,,,,,,,,,,,,,5,,,,24...........these  are  factors  of  120
,,,,,,,,,,,,,,,,,,,,,,,,,,,,2,,,12........these  are  factors  of  24
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,2,,,6......these  are  factors  of  12
,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,2,,3....these  are  factors  of  6
.
Therefore  prime  factors  of  120  are  2,2,2,3,5,,(which  multiply  to  120)
.
better  stated  as  2^3, 3, 5
.
Note  we  do  not  use  the  1,  in  this  factorization
.