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 6987, 6990 i.e. 3 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 6987 and 6990 is 3.
GCF(6987,6990) = 3
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
Prime Factorization of 6987
3 | 6987 |
17 | 2329 |
137 | 137 |
1 |
Prime factors of 6987 are 3,17,137. Prime factorization of 6987 in exponential form is:
6987 = 31×171×1371
Prime Factorization of 6990
2 | 6990 |
3 | 3495 |
5 | 1165 |
233 | 233 |
1 |
Prime factors of 6990 are 2,3,5,233. Prime factorization of 6990 in exponential form is:
6990 = 21×31×51×2331
∴ So by taking common prime factors GCF of 6987 and 6990 is 3
Factors of 6987
List of positive integer factors of 6987 that divides 6987 without a remainder.
1,3,17,51,137,411,2329,6987
Factors of 6990
List of positive integer factors of 6990 that divides 6990 without a remainder.
1,2,3,5,6,10,15,30,233,466,699,1165,1398,2330,3495,6990
Greatest Common Factor
We found the factors and prime factorization of 6987 and 6990. The biggest common factor number is the GCF number.
So the greatest common factor 6987 and 6990 is 3.
Also check out the Least Common Multiple of 6987 and 6990
(i) The GCF of 6987 and 6990 is associative
GCF of 6987 and 6990 = GCF of 6990 and 6987
1. What is the GCF of 6987 and 6990?
Answer: GCF of 6987 and 6990 is 3.
2. What are the Factors of 6987?
Answer: Factors of 6987 are 1, 3, 17, 51, 137, 411, 2329, 6987. There are 8 integers that are factors of 6987. The greatest factor of 6987 is 6987.
3. What are the Factors of 6990?
Answer: Factors of 6990 are 1, 2, 3, 5, 6, 10, 15, 30, 233, 466, 699, 1165, 1398, 2330, 3495, 6990. There are 16 integers that are factors of 6990. The greatest factor of 6990 is 6990.
4. How to Find the GCF of 6987 and 6990?
Answer:
Greatest Common Factor of 6987 and 6990 = 3
Step 1: Find the prime factorization of 6987
6987 = 3 x 17 x 137
Step 2: Find the prime factorization of 6990
6990 = 2 x 3 x 5 x 233
Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:
GCF = 3
Step 4: Therefore, the greatest common factor of 6987 and 6990 is 3