520 = 2 x 2 x 2 x 5 x 13
OR
2^3 x 5 x 13
2 x 2 x 2 x 5 x 13 = 520
Factor Tree of 520: ........520 ......../ \ ....104 5 ...../ \ ...4..26 ../\.. /\ 2 2 2 13
The greatest common factor of 198 and 520 is 2.
The GCF is 5.
35 can be a factor, but it is not prime.
1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520
520. 13 is a prime number and not a factor of 40.
The prime factors of 520 are: 2 5 13
Factor Tree of 520: ........520 ......../ \ ....104 5 ...../ \ ...4..26 ../\.. /\ 2 2 2 13
The greatest common factor of 198 and 520 is 2.
2,2,2,5,13
520 = 2 × 2 × 2 × 5 × 13
The factors of 520 are 1 2 4 5 8 10 13 20 26 40 52 65 104 130 260 520 The prime factorization of 520 is 23 x 5 x 13
520/390 taking 130 as common factor = 4:3
23*5*13
520 / \ 2 260 / \ 130 2 / \ 65 2 / \ 5 13
A factor can or cannot be a prime number Ex: 2 is the factor of all other even numbers its a prime number but 9 is a factor of 18 and its not a prime number A prime is a factor but a factor being a prime number varies
The greatest common factor (GCF) of 45 and 20 is 5.Prime factors:45 = 5×3×320 = 5×2×2the only prime factor in both is 5, and so the highest common factor is 5.Alternative method:45 mod 20 = 520 mod 5 = 0so HCF = 5.