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 681, 685 i.e. 1 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 681 and 685 is 1.
GCF(681,685) = 1
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
Prime Factorization of 681
3 | 681 |
227 | 227 |
1 |
Prime factors of 681 are 3,227. Prime factorization of 681 in exponential form is:
681 = 31×2271
Prime Factorization of 685
5 | 685 |
137 | 137 |
1 |
Prime factors of 685 are 5,137. Prime factorization of 685 in exponential form is:
685 = 51×1371
∴ So by taking common prime factors GCF of 681 and 685 is 1
Factors of 681
List of positive integer factors of 681 that divides 681 without a remainder.
1,3,227,681
Factors of 685
List of positive integer factors of 685 that divides 685 without a remainder.
1,5,137,685
Greatest Common Factor
We found the factors and prime factorization of 681 and 685. The biggest common factor number is the GCF number.
So the greatest common factor 681 and 685 is 1.
Also check out the Least Common Multiple of 681 and 685
(i) The GCF of 681 and 685 is associative
GCF of 681 and 685 = GCF of 685 and 681
1. What is the GCF of 681 and 685?
Answer: GCF of 681 and 685 is 1.
2. What are the Factors of 681?
Answer: Factors of 681 are 1, 3, 227, 681. There are 4 integers that are factors of 681. The greatest factor of 681 is 681.
3. What are the Factors of 685?
Answer: Factors of 685 are 1, 5, 137, 685. There are 4 integers that are factors of 685. The greatest factor of 685 is 685.
4. How to Find the GCF of 681 and 685?
Answer:
Greatest Common Factor of 681 and 685 = 1
Step 1: Find the prime factorization of 681
681 = 3 x 227
Step 2: Find the prime factorization of 685
685 = 5 x 137
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 681 and 685 is 1