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 140, 154 i.e. 14 largest integer by which both the numbers can be divided.
Greatest common factor (GCF) of 140 and 154 is 14.
GCF(140,154) = 14
Greatest common factor or Greatest common divisor (GCD) can be calculated in following way;
Prime Factorization of 140
2 | 140 |
2 | 70 |
5 | 35 |
7 | 7 |
1 |
Prime factors of 140 are 2,5,7. Prime factorization of 140 in exponential form is:
140 = 22×51×71
Prime Factorization of 154
2 | 154 |
7 | 77 |
11 | 11 |
1 |
Prime factors of 154 are 2,7,11. Prime factorization of 154 in exponential form is:
154 = 21×71×111
∴ So by taking common prime factors GCF of 140 and 154 is 14
Factors of 140
List of positive integer factors of 140 that divides 140 without a remainder.
1,2,4,5,7,10,14,20,28,35,70,140
Factors of 154
List of positive integer factors of 154 that divides 154 without a remainder.
1,2,7,11,14,22,77,154
Greatest Common Factor
We found the factors and prime factorization of 140 and 154. The biggest common factor number is the GCF number.
So the greatest common factor 140 and 154 is 14.
Also check out the Least Common Multiple of 140 and 154
(i) The GCF of 140 and 154 is associative
GCF of 140 and 154 = GCF of 154 and 140
1. What is the GCF of 140 and 154?
Answer: GCF of 140 and 154 is 14.
2. What are the Factors of 140?
Answer: Factors of 140 are 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140. There are 12 integers that are factors of 140. The greatest factor of 140 is 140.
3. What are the Factors of 154?
Answer: Factors of 154 are 1, 2, 7, 11, 14, 22, 77, 154. There are 8 integers that are factors of 154. The greatest factor of 154 is 154.
4. How to Find the GCF of 140 and 154?
Answer:
Greatest Common Factor of 140 and 154 = 14
Step 1: Find the prime factorization of 140
140 = 2 x 2 x 5 x 7
Step 2: Find the prime factorization of 154
154 = 2 x 7 x 11
Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:
GCF = 2 x 7 = 14
Step 4: Therefore, the greatest common factor of 140 and 154 is 14