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 2985, 2991 i.e. 3 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 2985 and 2991 is 3.
GCF(2985,2991) = 3
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
Prime Factorization of 2985
3 | 2985 |
5 | 995 |
199 | 199 |
1 |
Prime factors of 2985 are 3,5,199. Prime factorization of 2985 in exponential form is:
2985 = 31×51×1991
Prime Factorization of 2991
3 | 2991 |
997 | 997 |
1 |
Prime factors of 2991 are 3,997. Prime factorization of 2991 in exponential form is:
2991 = 31×9971
∴ So by taking common prime factors GCF of 2985 and 2991 is 3
Factors of 2985
List of positive integer factors of 2985 that divides 2985 without a remainder.
1,3,5,15,199,597,995,2985
Factors of 2991
List of positive integer factors of 2991 that divides 2991 without a remainder.
1,3,997,2991
Greatest Common Factor
We found the factors and prime factorization of 2985 and 2991. The biggest common factor number is the GCF number.
So the greatest common factor 2985 and 2991 is 3.
Also check out the Least Common Multiple of 2985 and 2991
(i) The GCF of 2985 and 2991 is associative
GCF of 2985 and 2991 = GCF of 2991 and 2985
1. What is the GCF of 2985 and 2991?
Answer: GCF of 2985 and 2991 is 3.
2. What are the Factors of 2985?
Answer: Factors of 2985 are 1, 3, 5, 15, 199, 597, 995, 2985. There are 8 integers that are factors of 2985. The greatest factor of 2985 is 2985.
3. What are the Factors of 2991?
Answer: Factors of 2991 are 1, 3, 997, 2991. There are 4 integers that are factors of 2991. The greatest factor of 2991 is 2991.
4. How to Find the GCF of 2985 and 2991?
Answer:
Greatest Common Factor of 2985 and 2991 = 3
Step 1: Find the prime factorization of 2985
2985 = 3 x 5 x 199
Step 2: Find the prime factorization of 2991
2991 = 3 x 997
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 2985 and 2991 is 3