Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 648 and 653 the smallest integer that is 423144 that is divisible by both numbers.
Least Common Multiple (LCM) of 648 and 653 is 423144.
LCM(648,653) = 423144
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 648 and 653. First we will calculate the prime factors of 648 and 653.
Prime Factorization of 648
2 | 648 |
2 | 324 |
2 | 162 |
3 | 81 |
3 | 27 |
3 | 9 |
3 | 3 |
1 |
Prime factors of 648 are 2,3. Prime factorization of 648 in exponential form is:
648 = 23×34
Prime Factorization of 653
653 | 653 |
1 |
Prime factors of 653 are 653. Prime factorization of 653 in exponential form is:
653 = 6531
Now multiplying the highest exponent prime factors to calculate the LCM of 648 and 653.
LCM(648,653) = 23×34×6531
LCM(648,653) = 423144
Factors of 648
List of positive integer factors of 648 that divides 648 without a remainder.
1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 324, 648
Factors of 653
List of positive integer factors of 653 that divides 653 without a remainder.
1, 653
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 648 and 653, than apply into the LCM equation.
GCF(648,653) = 1
LCM(648,653) = ( 648 × 653) / 1
LCM(648,653) = 423144 / 1
LCM(648,653) = 423144
(i) The LCM of 653 and 648 is associative
LCM of 648 and 653 = LCM of 653 and 648
1. What is the LCM of 648 and 653?
Answer: LCM of 648 and 653 is 423144.
2. What are the Factors of 648?
Answer: Factors of 648 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 324, 648. There are 20 integers that are factors of 648. The greatest factor of 648 is 648.
3. What are the Factors of 653?
Answer: Factors of 653 are 1, 653. There are 2 integers that are factors of 653. The greatest factor of 653 is 653.
4. How to Find the LCM of 648 and 653?
Answer:
Least Common Multiple of 648 and 653 = 423144
Step 1: Find the prime factorization of 648
648 = 2 x 2 x 2 x 3 x 3 x 3 x 3
Step 2: Find the prime factorization of 653
653 = 653
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 423144 = 2 x 2 x 2 x 3 x 3 x 3 x 3 x 653
Step 4: Therefore, the least common multiple of 648 and 653 is 423144.