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 28245, 28251 i.e. 3 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 28245 and 28251 is 3.
GCF(28245,28251) = 3
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
Prime Factorization of 28245
3 | 28245 |
5 | 9415 |
7 | 1883 |
269 | 269 |
1 |
Prime factors of 28245 are 3,5,7,269. Prime factorization of 28245 in exponential form is:
28245 = 31×51×71×2691
Prime Factorization of 28251
3 | 28251 |
3 | 9417 |
43 | 3139 |
73 | 73 |
1 |
Prime factors of 28251 are 3,43,73. Prime factorization of 28251 in exponential form is:
28251 = 32×431×731
∴ So by taking common prime factors GCF of 28245 and 28251 is 3
Factors of 28245
List of positive integer factors of 28245 that divides 28245 without a remainder.
1,3,5,7,15,21,35,105,269,807,1345,1883,4035,5649,9415,28245
Factors of 28251
List of positive integer factors of 28251 that divides 28251 without a remainder.
1,3,9,43,73,129,219,387,657,3139,9417,28251
Greatest Common Factor
We found the factors and prime factorization of 28245 and 28251. The biggest common factor number is the GCF number.
So the greatest common factor 28245 and 28251 is 3.
Also check out the Least Common Multiple of 28245 and 28251
(i) The GCF of 28245 and 28251 is associative
GCF of 28245 and 28251 = GCF of 28251 and 28245
1. What is the GCF of 28245 and 28251?
Answer: GCF of 28245 and 28251 is 3.
2. What are the Factors of 28245?
Answer: Factors of 28245 are 1, 3, 5, 7, 15, 21, 35, 105, 269, 807, 1345, 1883, 4035, 5649, 9415, 28245. There are 16 integers that are factors of 28245. The greatest factor of 28245 is 28245.
3. What are the Factors of 28251?
Answer: Factors of 28251 are 1, 3, 9, 43, 73, 129, 219, 387, 657, 3139, 9417, 28251. There are 12 integers that are factors of 28251. The greatest factor of 28251 is 28251.
4. How to Find the GCF of 28245 and 28251?
Answer:
Greatest Common Factor of 28245 and 28251 = 3
Step 1: Find the prime factorization of 28245
28245 = 3 x 5 x 7 x 269
Step 2: Find the prime factorization of 28251
28251 = 3 x 3 x 43 x 73
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 28245 and 28251 is 3