Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 656 and 664 the smallest integer that is 54448 that is divisible by both numbers.
Least Common Multiple (LCM) of 656 and 664 is 54448.
LCM(656,664) = 54448
Least common multiple or lowest common denominator (LCD) can be calculated in three ways;
Least common multiple can be found by multiplying the highest exponent prime factors of 656 and 664. First we will calculate the prime factors of 656 and 664.
Prime Factorization of 656
2 | 656 |
2 | 328 |
2 | 164 |
2 | 82 |
41 | 41 |
1 |
Prime factors of 656 are 2,41. Prime factorization of 656 in exponential form is:
656 = 24×411
Prime Factorization of 664
2 | 664 |
2 | 332 |
2 | 166 |
83 | 83 |
1 |
Prime factors of 664 are 2,83. Prime factorization of 664 in exponential form is:
664 = 23×831
Now multiplying the highest exponent prime factors to calculate the LCM of 656 and 664.
LCM(656,664) = 24×411×831
LCM(656,664) = 54448
Factors of 656
List of positive integer factors of 656 that divides 656 without a remainder.
1, 2, 4, 8, 16, 41, 82, 164, 328, 656
Factors of 664
List of positive integer factors of 664 that divides 664 without a remainder.
1, 2, 4, 8, 83, 166, 332, 664
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 656 and 664, than apply into the LCM equation.
GCF(656,664) = 8
LCM(656,664) = ( 656 × 664) / 8
LCM(656,664) = 435584 / 8
LCM(656,664) = 54448
(i) The LCM of 664 and 656 is associative
LCM of 656 and 664 = LCM of 664 and 656
1. What is the LCM of 656 and 664?
Answer: LCM of 656 and 664 is 54448.
2. What are the Factors of 656?
Answer: Factors of 656 are 1, 2, 4, 8, 16, 41, 82, 164, 328, 656. There are 10 integers that are factors of 656. The greatest factor of 656 is 656.
3. What are the Factors of 664?
Answer: Factors of 664 are 1, 2, 4, 8, 83, 166, 332, 664. There are 8 integers that are factors of 664. The greatest factor of 664 is 664.
4. How to Find the LCM of 656 and 664?
Answer:
Least Common Multiple of 656 and 664 = 54448
Step 1: Find the prime factorization of 656
656 = 2 x 2 x 2 x 2 x 41
Step 2: Find the prime factorization of 664
664 = 2 x 2 x 2 x 83
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 54448 = 2 x 2 x 2 x 2 x 41 x 83
Step 4: Therefore, the least common multiple of 656 and 664 is 54448.