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 1243, 1248 i.e. 1 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 1243 and 1248 is 1.
GCF(1243,1248) = 1
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
Prime Factorization of 1243
11 | 1243 |
113 | 113 |
1 |
Prime factors of 1243 are 11,113. Prime factorization of 1243 in exponential form is:
1243 = 111×1131
Prime Factorization of 1248
2 | 1248 |
2 | 624 |
2 | 312 |
2 | 156 |
2 | 78 |
3 | 39 |
13 | 13 |
1 |
Prime factors of 1248 are 2,3,13. Prime factorization of 1248 in exponential form is:
1248 = 25×31×131
∴ So by taking common prime factors GCF of 1243 and 1248 is 1
Factors of 1243
List of positive integer factors of 1243 that divides 1243 without a remainder.
1,11,113,1243
Factors of 1248
List of positive integer factors of 1248 that divides 1248 without a remainder.
1,2,3,4,6,8,12,13,16,24,26,32,39,48,52,78,96,104,156,208,312,416,624,1248
Greatest Common Factor
We found the factors and prime factorization of 1243 and 1248. The biggest common factor number is the GCF number.
So the greatest common factor 1243 and 1248 is 1.
Also check out the Least Common Multiple of 1243 and 1248
(i) The GCF of 1243 and 1248 is associative
GCF of 1243 and 1248 = GCF of 1248 and 1243
1. What is the GCF of 1243 and 1248?
Answer: GCF of 1243 and 1248 is 1.
2. What are the Factors of 1243?
Answer: Factors of 1243 are 1, 11, 113, 1243. There are 4 integers that are factors of 1243. The greatest factor of 1243 is 1243.
3. What are the Factors of 1248?
Answer: Factors of 1248 are 1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 48, 52, 78, 96, 104, 156, 208, 312, 416, 624, 1248. There are 24 integers that are factors of 1248. The greatest factor of 1248 is 1248.
4. How to Find the GCF of 1243 and 1248?
Answer:
Greatest Common Factor of 1243 and 1248 = 1
Step 1: Find the prime factorization of 1243
1243 = 11 x 113
Step 2: Find the prime factorization of 1248
1248 = 2 x 2 x 2 x 2 x 2 x 3 x 13
Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:
GCF = = 1
Step 4: Therefore, the greatest common factor of 1243 and 1248 is 1