2 x 3 x 11
The GCF of 20 and 66 is 2. The prime factorization of 20 is 2*2*2 The prime factorization of 66 is 2*3*11 Their only common factor is 2, so it is their GCF.
61 is already prime. It doesn't need a tree.
The Greatest Common Factor of the three numbers is 6.
To get the prime factorization of 66, start with any of its factor pairs and keep factoring the numbers until they are all prime. 2 x 33 2 x 3 x 11 All the factors are prime, so the prime factorization is 2 x 3 x 11.
All even numbers, except 2, are composite.
2, 3 and 11
23 is prime, 66 is composite.
66-(1,2,3,6,11,22,33,66) Composite
No. All whole numbers ending in six are composite.
66 is composite.
== == Yes. Once we open the field from integers to composite numbers, the gloves come off and lots of things are possible. Example: 1 1/2 = 3 x 1/3. The factor 3 is prime. All composite numbers have prime numbers as factors. Examples: 4 is a composite number of 2 x 2. 38 is a composite number of 2 x 19. 66 is a composite number of 2 x 3 x 11. == ==
composite
A factor tree is a visual metod of breaking down any number into its consituent set of prime number factors. in the case of 66: 66 = 33 x 2 = 11 x 3 x 2 where 11, 3 and 2 are prime numbers and cannot be split down further. Each slit can be represented visually as a branch with the composite numbers at rhe end of each twig giving the name as a factor 'tree'.
66 33,2 11,3,2 There's no formula. Just divide your number and its factors by prime numbers until all the factors are prime.
How about the prime numbers of: 47+19 = 66
The prime factors of 66 are: 2, 3 and 11