Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Make use of GCF Calculator to quickly find the Greatest Common Factor of numbers 86, 90 i.e. 2 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 86 and 90 is 2.
GCF(86,90) = 2
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
Prime Factorization of 86
2 | 86 |
43 | 43 |
1 |
Prime factors of 86 are 2,43. Prime factorization of 86 in exponential form is:
86 = 21×431
Prime Factorization of 90
2 | 90 |
3 | 45 |
3 | 15 |
5 | 5 |
1 |
Prime factors of 90 are 2,3,5. Prime factorization of 90 in exponential form is:
90 = 21×32×51
∴ So by taking common prime factors GCF of 86 and 90 is 2
Factors of 86
List of positive integer factors of 86 that divides 86 without a remainder.
1,2,43,86
Factors of 90
List of positive integer factors of 90 that divides 90 without a remainder.
1,2,3,5,6,9,10,15,18,30,45,90
Greatest Common Factor
We found the factors and prime factorization of 86 and 90. The biggest common factor number is the GCF number.
So the greatest common factor 86 and 90 is 2.
Also check out the Least Common Multiple of 86 and 90
(i) The GCF of 86 and 90 is associative
GCF of 86 and 90 = GCF of 90 and 86
1. What is the GCF of 86 and 90?
Answer: GCF of 86 and 90 is 2.
2. What are the Factors of 86?
Answer: Factors of 86 are 1, 2, 43, 86. There are 4 integers that are factors of 86. The greatest factor of 86 is 86.
3. What are the Factors of 90?
Answer: Factors of 90 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90. There are 12 integers that are factors of 90. The greatest factor of 90 is 90.
4. How to Find the GCF of 86 and 90?
Answer:
Greatest Common Factor of 86 and 90 = 2
Step 1: Find the prime factorization of 86
86 = 2 x 43
Step 2: Find the prime factorization of 90
90 = 2 x 3 x 3 x 5
Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:
GCF = 2
Step 4: Therefore, the greatest common factor of 86 and 90 is 2