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 2780, 2788 i.e. 4 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 2780 and 2788 is 4.
GCF(2780,2788) = 4
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
Prime Factorization of 2780
2 | 2780 |
2 | 1390 |
5 | 695 |
139 | 139 |
1 |
Prime factors of 2780 are 2,5,139. Prime factorization of 2780 in exponential form is:
2780 = 22×51×1391
Prime Factorization of 2788
2 | 2788 |
2 | 1394 |
17 | 697 |
41 | 41 |
1 |
Prime factors of 2788 are 2,17,41. Prime factorization of 2788 in exponential form is:
2788 = 22×171×411
∴ So by taking common prime factors GCF of 2780 and 2788 is 4
Factors of 2780
List of positive integer factors of 2780 that divides 2780 without a remainder.
1,2,4,5,10,20,139,278,556,695,1390,2780
Factors of 2788
List of positive integer factors of 2788 that divides 2788 without a remainder.
1,2,4,17,34,41,68,82,164,697,1394,2788
Greatest Common Factor
We found the factors and prime factorization of 2780 and 2788. The biggest common factor number is the GCF number.
So the greatest common factor 2780 and 2788 is 4.
Also check out the Least Common Multiple of 2780 and 2788
(i) The GCF of 2780 and 2788 is associative
GCF of 2780 and 2788 = GCF of 2788 and 2780
1. What is the GCF of 2780 and 2788?
Answer: GCF of 2780 and 2788 is 4.
2. What are the Factors of 2780?
Answer: Factors of 2780 are 1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780. There are 12 integers that are factors of 2780. The greatest factor of 2780 is 2780.
3. What are the Factors of 2788?
Answer: Factors of 2788 are 1, 2, 4, 17, 34, 41, 68, 82, 164, 697, 1394, 2788. There are 12 integers that are factors of 2788. The greatest factor of 2788 is 2788.
4. How to Find the GCF of 2780 and 2788?
Answer:
Greatest Common Factor of 2780 and 2788 = 4
Step 1: Find the prime factorization of 2780
2780 = 2 x 2 x 5 x 139
Step 2: Find the prime factorization of 2788
2788 = 2 x 2 x 17 x 41
Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:
GCF = 2 x 2 = 4
Step 4: Therefore, the greatest common factor of 2780 and 2788 is 4