The factors of 81 are: 1, 3, 9, 27, 81.
9x9=81. Proving that one of the factor trees for 81 is 9xp.
27 and 81 are a possibility. Also numbers like 5 and 10, 20 and 40.
873 x 29Since both 3 and 29 are prime numbers, the factor tree is complete.
3x7=21 3 and 7 are prime numbers, so 3x7 is the factor tree of the number 21.
All the numbers are prime
9x9=81. Proving that one of the factor trees for 81 is 9xp.
81 27,3 9,3,3 3,3,3,3
81 27,3 9,3,3 3,3,3,3
81 27,3 9,3,3 3,3,3,3
81 27,3 9,3,3 3,3,3,3
81 27,3 9,3,3 3,3,3,3
81 27,3 9,3,3 3,3,3,3
45 15,3 5,3,3 81 27,3 9,3,3 3,3,3,3
The factors of 81 are 1, 3, 9, 27, and 81. The factors of 243 are 1, 3, 9, 27, 81, and 243. The common factors of 81 and 243 are 1, 3, 9, 27, and 81. Therefore, the least common factor (the smallest common factor) is 1.
The greatest common factor for the numbers 27 and 81 are 27.
51 3,17 81 9,9 3,3,9 3,3,3,3 The GCF is 3.
A factor tree of number is (I think) the numbers that multiply together to form a product. They are prime numbers, too.