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 208, 215 i.e. 1 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 208 and 215 is 1.
GCF(208,215) = 1
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
Prime Factorization of 208
2 | 208 |
2 | 104 |
2 | 52 |
2 | 26 |
13 | 13 |
1 |
Prime factors of 208 are 2,13. Prime factorization of 208 in exponential form is:
208 = 24×131
Prime Factorization of 215
5 | 215 |
43 | 43 |
1 |
Prime factors of 215 are 5,43. Prime factorization of 215 in exponential form is:
215 = 51×431
∴ So by taking common prime factors GCF of 208 and 215 is 1
Factors of 208
List of positive integer factors of 208 that divides 208 without a remainder.
1,2,4,8,13,16,26,52,104,208
Factors of 215
List of positive integer factors of 215 that divides 215 without a remainder.
1,5,43,215
Greatest Common Factor
We found the factors and prime factorization of 208 and 215. The biggest common factor number is the GCF number.
So the greatest common factor 208 and 215 is 1.
Also check out the Least Common Multiple of 208 and 215
(i) The GCF of 208 and 215 is associative
GCF of 208 and 215 = GCF of 215 and 208
1. What is the GCF of 208 and 215?
Answer: GCF of 208 and 215 is 1.
2. What are the Factors of 208?
Answer: Factors of 208 are 1, 2, 4, 8, 13, 16, 26, 52, 104, 208. There are 10 integers that are factors of 208. The greatest factor of 208 is 208.
3. What are the Factors of 215?
Answer: Factors of 215 are 1, 5, 43, 215. There are 4 integers that are factors of 215. The greatest factor of 215 is 215.
4. How to Find the GCF of 208 and 215?
Answer:
Greatest Common Factor of 208 and 215 = 1
Step 1: Find the prime factorization of 208
208 = 2 x 2 x 2 x 2 x 13
Step 2: Find the prime factorization of 215
215 = 5 x 43
Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:
GCF = = 1
Step 4: Therefore, the greatest common factor of 208 and 215 is 1