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 870, 875 i.e. 5 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 870 and 875 is 5.
GCF(870,875) = 5
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
Prime Factorization of 870
2 | 870 |
3 | 435 |
5 | 145 |
29 | 29 |
1 |
Prime factors of 870 are 2,3,5,29. Prime factorization of 870 in exponential form is:
870 = 21×31×51×291
Prime Factorization of 875
5 | 875 |
5 | 175 |
5 | 35 |
7 | 7 |
1 |
Prime factors of 875 are 5,7. Prime factorization of 875 in exponential form is:
875 = 53×71
∴ So by taking common prime factors GCF of 870 and 875 is 5
Factors of 870
List of positive integer factors of 870 that divides 870 without a remainder.
1,2,3,5,6,10,15,29,30,58,87,145,174,290,435,870
Factors of 875
List of positive integer factors of 875 that divides 875 without a remainder.
1,5,7,25,35,125,175,875
Greatest Common Factor
We found the factors and prime factorization of 870 and 875. The biggest common factor number is the GCF number.
So the greatest common factor 870 and 875 is 5.
Also check out the Least Common Multiple of 870 and 875
(i) The GCF of 870 and 875 is associative
GCF of 870 and 875 = GCF of 875 and 870
1. What is the GCF of 870 and 875?
Answer: GCF of 870 and 875 is 5.
2. What are the Factors of 870?
Answer: Factors of 870 are 1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 87, 145, 174, 290, 435, 870. There are 16 integers that are factors of 870. The greatest factor of 870 is 870.
3. What are the Factors of 875?
Answer: Factors of 875 are 1, 5, 7, 25, 35, 125, 175, 875. There are 8 integers that are factors of 875. The greatest factor of 875 is 875.
4. How to Find the GCF of 870 and 875?
Answer:
Greatest Common Factor of 870 and 875 = 5
Step 1: Find the prime factorization of 870
870 = 2 x 3 x 5 x 29
Step 2: Find the prime factorization of 875
875 = 5 x 5 x 5 x 7
Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:
GCF = 5
Step 4: Therefore, the greatest common factor of 870 and 875 is 5