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 1020, 1025 i.e. 5 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 1020 and 1025 is 5.
GCF(1020,1025) = 5
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
Prime Factorization of 1020
2 | 1020 |
2 | 510 |
3 | 255 |
5 | 85 |
17 | 17 |
1 |
Prime factors of 1020 are 2,3,5,17. Prime factorization of 1020 in exponential form is:
1020 = 22×31×51×171
Prime Factorization of 1025
5 | 1025 |
5 | 205 |
41 | 41 |
1 |
Prime factors of 1025 are 5,41. Prime factorization of 1025 in exponential form is:
1025 = 52×411
∴ So by taking common prime factors GCF of 1020 and 1025 is 5
Factors of 1020
List of positive integer factors of 1020 that divides 1020 without a remainder.
1,2,3,4,5,6,10,12,15,17,20,30,34,51,60,68,85,102,170,204,255,340,510,1020
Factors of 1025
List of positive integer factors of 1025 that divides 1025 without a remainder.
1,5,25,41,205,1025
Greatest Common Factor
We found the factors and prime factorization of 1020 and 1025. The biggest common factor number is the GCF number.
So the greatest common factor 1020 and 1025 is 5.
Also check out the Least Common Multiple of 1020 and 1025
(i) The GCF of 1020 and 1025 is associative
GCF of 1020 and 1025 = GCF of 1025 and 1020
1. What is the GCF of 1020 and 1025?
Answer: GCF of 1020 and 1025 is 5.
2. What are the Factors of 1020?
Answer: Factors of 1020 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020. There are 24 integers that are factors of 1020. The greatest factor of 1020 is 1020.
3. What are the Factors of 1025?
Answer: Factors of 1025 are 1, 5, 25, 41, 205, 1025. There are 6 integers that are factors of 1025. The greatest factor of 1025 is 1025.
4. How to Find the GCF of 1020 and 1025?
Answer:
Greatest Common Factor of 1020 and 1025 = 5
Step 1: Find the prime factorization of 1020
1020 = 2 x 2 x 3 x 5 x 17
Step 2: Find the prime factorization of 1025
1025 = 5 x 5 x 41
Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:
GCF = 5
Step 4: Therefore, the greatest common factor of 1020 and 1025 is 5