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 2109, 2115 i.e. 3 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 2109 and 2115 is 3.
GCF(2109,2115) = 3
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
Prime Factorization of 2109
3 | 2109 |
19 | 703 |
37 | 37 |
1 |
Prime factors of 2109 are 3,19,37. Prime factorization of 2109 in exponential form is:
2109 = 31×191×371
Prime Factorization of 2115
3 | 2115 |
3 | 705 |
5 | 235 |
47 | 47 |
1 |
Prime factors of 2115 are 3,5,47. Prime factorization of 2115 in exponential form is:
2115 = 32×51×471
∴ So by taking common prime factors GCF of 2109 and 2115 is 3
Factors of 2109
List of positive integer factors of 2109 that divides 2109 without a remainder.
1,3,19,37,57,111,703,2109
Factors of 2115
List of positive integer factors of 2115 that divides 2115 without a remainder.
1,3,5,9,15,45,47,141,235,423,705,2115
Greatest Common Factor
We found the factors and prime factorization of 2109 and 2115. The biggest common factor number is the GCF number.
So the greatest common factor 2109 and 2115 is 3.
Also check out the Least Common Multiple of 2109 and 2115
(i) The GCF of 2109 and 2115 is associative
GCF of 2109 and 2115 = GCF of 2115 and 2109
1. What is the GCF of 2109 and 2115?
Answer: GCF of 2109 and 2115 is 3.
2. What are the Factors of 2109?
Answer: Factors of 2109 are 1, 3, 19, 37, 57, 111, 703, 2109. There are 8 integers that are factors of 2109. The greatest factor of 2109 is 2109.
3. What are the Factors of 2115?
Answer: Factors of 2115 are 1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115. There are 12 integers that are factors of 2115. The greatest factor of 2115 is 2115.
4. How to Find the GCF of 2109 and 2115?
Answer:
Greatest Common Factor of 2109 and 2115 = 3
Step 1: Find the prime factorization of 2109
2109 = 3 x 19 x 37
Step 2: Find the prime factorization of 2115
2115 = 3 x 3 x 5 x 47
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 2109 and 2115 is 3