188 94,2 47,2,2
150 75,2 25,3,2 5,5,3,2
42,2 21,2,2 7,3,2,2
24 12,2 6,2,2 3,2,2,2
340 170,2 85,2,2 17,5,2,2
78 2x39
A factor tree of 78: 78 6 x 13 (2x3) x 13 Since 2, 3, and 13 are prime numbers, the factor tree is complete.
78 39,2 13,3,2
78 39,2 13,3,2
Factor tree: ............78 .........../..\ ..........2..39 ............../..\ ............3...13 78 = 2 x 3 x 13
78 39,2 13,3,2
78 / \ 3 26 / \ 13 2
78 6 x 13 (2x3) x 13 Since 2, 3, and 13 are prime numbers, the factor tree is complete.
Use a factor tree. 78 39,2 13,3,2
77 7,11
15 3,5
1,270,2,135