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 1315, 1320 i.e. 5 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 1315 and 1320 is 5.
GCF(1315,1320) = 5
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
Prime Factorization of 1315
5 | 1315 |
263 | 263 |
1 |
Prime factors of 1315 are 5,263. Prime factorization of 1315 in exponential form is:
1315 = 51×2631
Prime Factorization of 1320
2 | 1320 |
2 | 660 |
2 | 330 |
3 | 165 |
5 | 55 |
11 | 11 |
1 |
Prime factors of 1320 are 2,3,5,11. Prime factorization of 1320 in exponential form is:
1320 = 23×31×51×111
∴ So by taking common prime factors GCF of 1315 and 1320 is 5
Factors of 1315
List of positive integer factors of 1315 that divides 1315 without a remainder.
1,5,263,1315
Factors of 1320
List of positive integer factors of 1320 that divides 1320 without a remainder.
1,2,3,4,5,6,8,10,11,12,15,20,22,24,30,33,40,44,55,60,66,88,110,120,132,165,220,264,330,440,660,1320
Greatest Common Factor
We found the factors and prime factorization of 1315 and 1320. The biggest common factor number is the GCF number.
So the greatest common factor 1315 and 1320 is 5.
Also check out the Least Common Multiple of 1315 and 1320
(i) The GCF of 1315 and 1320 is associative
GCF of 1315 and 1320 = GCF of 1320 and 1315
1. What is the GCF of 1315 and 1320?
Answer: GCF of 1315 and 1320 is 5.
2. What are the Factors of 1315?
Answer: Factors of 1315 are 1, 5, 263, 1315. There are 4 integers that are factors of 1315. The greatest factor of 1315 is 1315.
3. What are the Factors of 1320?
Answer: Factors of 1320 are 1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 132, 165, 220, 264, 330, 440, 660, 1320. There are 32 integers that are factors of 1320. The greatest factor of 1320 is 1320.
4. How to Find the GCF of 1315 and 1320?
Answer:
Greatest Common Factor of 1315 and 1320 = 5
Step 1: Find the prime factorization of 1315
1315 = 5 x 263
Step 2: Find the prime factorization of 1320
1320 = 2 x 2 x 2 x 3 x 5 x 11
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 1315 and 1320 is 5