56
^
2 28
^
2 14
^
2 7
pf:2x2x2x7
2 to the third power 7
listing method , factor tree
46 23,2
500 250,2 125,2,2 25,5,2,2 5,5,5,2,2
92 /\ 2 46 /\ 2 23
1638 819,2 273,3,2 91,3,3,2 13,7,3,3,2
92 46,2 23,2,2
..........44 ........../ \ ........11 4 ............/ \ ............2 2
The only name is factorization.
420 210,2 105,2,2 35,3,2,2 7,5,3,2,2
Since prime numbers only have one prime factor (themselves), factor trees are unnecessary.
72 36,2 18,2,2 9,2,2,2 3,3,2,2,2
Factor tree are used to find factors of a number. It is one of the most preferred methods for finding factor of a number by many people. However, not everyone in every country knows about this method.