Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 423 and 424 the smallest integer that is 179352 that is divisible by both numbers.
Least Common Multiple (LCM) of 423 and 424 is 179352.
LCM(423,424) = 179352
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 423 and 424. First we will calculate the prime factors of 423 and 424.
Prime Factorization of 423
3 | 423 |
3 | 141 |
47 | 47 |
1 |
Prime factors of 423 are 3,47. Prime factorization of 423 in exponential form is:
423 = 32×471
Prime Factorization of 424
2 | 424 |
2 | 212 |
2 | 106 |
53 | 53 |
1 |
Prime factors of 424 are 2,53. Prime factorization of 424 in exponential form is:
424 = 23×531
Now multiplying the highest exponent prime factors to calculate the LCM of 423 and 424.
LCM(423,424) = 23×32×471×531
LCM(423,424) = 179352
Factors of 423
List of positive integer factors of 423 that divides 423 without a remainder.
1, 3, 9, 47, 141, 423
Factors of 424
List of positive integer factors of 424 that divides 424 without a remainder.
1, 2, 4, 8, 53, 106, 212, 424
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 423 and 424, than apply into the LCM equation.
GCF(423,424) = 1
LCM(423,424) = ( 423 × 424) / 1
LCM(423,424) = 179352 / 1
LCM(423,424) = 179352
(i) The LCM of 424 and 423 is associative
LCM of 423 and 424 = LCM of 424 and 423
1. What is the LCM of 423 and 424?
Answer: LCM of 423 and 424 is 179352.
2. What are the Factors of 423?
Answer: Factors of 423 are 1, 3, 9, 47, 141, 423. There are 6 integers that are factors of 423. The greatest factor of 423 is 423.
3. What are the Factors of 424?
Answer: Factors of 424 are 1, 2, 4, 8, 53, 106, 212, 424. There are 8 integers that are factors of 424. The greatest factor of 424 is 424.
4. How to Find the LCM of 423 and 424?
Answer:
Least Common Multiple of 423 and 424 = 179352
Step 1: Find the prime factorization of 423
423 = 3 x 3 x 47
Step 2: Find the prime factorization of 424
424 = 2 x 2 x 2 x 53
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 179352 = 2 x 2 x 2 x 3 x 3 x 47 x 53
Step 4: Therefore, the least common multiple of 423 and 424 is 179352.