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 8215, 8220 i.e. 5 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 8215 and 8220 is 5.
GCF(8215,8220) = 5
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
Prime Factorization of 8215
5 | 8215 |
31 | 1643 |
53 | 53 |
1 |
Prime factors of 8215 are 5,31,53. Prime factorization of 8215 in exponential form is:
8215 = 51×311×531
Prime Factorization of 8220
2 | 8220 |
2 | 4110 |
3 | 2055 |
5 | 685 |
137 | 137 |
1 |
Prime factors of 8220 are 2,3,5,137. Prime factorization of 8220 in exponential form is:
8220 = 22×31×51×1371
∴ So by taking common prime factors GCF of 8215 and 8220 is 5
Factors of 8215
List of positive integer factors of 8215 that divides 8215 without a remainder.
1,5,31,53,155,265,1643,8215
Factors of 8220
List of positive integer factors of 8220 that divides 8220 without a remainder.
1,2,3,4,5,6,10,12,15,20,30,60,137,274,411,548,685,822,1370,1644,2055,2740,4110,8220
Greatest Common Factor
We found the factors and prime factorization of 8215 and 8220. The biggest common factor number is the GCF number.
So the greatest common factor 8215 and 8220 is 5.
Also check out the Least Common Multiple of 8215 and 8220
(i) The GCF of 8215 and 8220 is associative
GCF of 8215 and 8220 = GCF of 8220 and 8215
1. What is the GCF of 8215 and 8220?
Answer: GCF of 8215 and 8220 is 5.
2. What are the Factors of 8215?
Answer: Factors of 8215 are 1, 5, 31, 53, 155, 265, 1643, 8215. There are 8 integers that are factors of 8215. The greatest factor of 8215 is 8215.
3. What are the Factors of 8220?
Answer: Factors of 8220 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 137, 274, 411, 548, 685, 822, 1370, 1644, 2055, 2740, 4110, 8220. There are 24 integers that are factors of 8220. The greatest factor of 8220 is 8220.
4. How to Find the GCF of 8215 and 8220?
Answer:
Greatest Common Factor of 8215 and 8220 = 5
Step 1: Find the prime factorization of 8215
8215 = 5 x 31 x 53
Step 2: Find the prime factorization of 8220
8220 = 2 x 2 x 3 x 5 x 137
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 8215 and 8220 is 5