Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 418 and 423 the smallest integer that is 176814 that is divisible by both numbers.
Least Common Multiple (LCM) of 418 and 423 is 176814.
LCM(418,423) = 176814
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 418 and 423. First we will calculate the prime factors of 418 and 423.
Prime Factorization of 418
2 | 418 |
11 | 209 |
19 | 19 |
1 |
Prime factors of 418 are 2, 11,19. Prime factorization of 418 in exponential form is:
418 = 21×111×191
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
Now multiplying the highest exponent prime factors to calculate the LCM of 418 and 423.
LCM(418,423) = 21×32×111×191×471
LCM(418,423) = 176814
Factors of 418
List of positive integer factors of 418 that divides 418 without a remainder.
1, 2, 11, 19, 22, 38, 209, 418
Factors of 423
List of positive integer factors of 423 that divides 423 without a remainder.
1, 3, 9, 47, 141, 423
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 418 and 423, than apply into the LCM equation.
GCF(418,423) = 1
LCM(418,423) = ( 418 × 423) / 1
LCM(418,423) = 176814 / 1
LCM(418,423) = 176814
(i) The LCM of 423 and 418 is associative
LCM of 418 and 423 = LCM of 423 and 418
1. What is the LCM of 418 and 423?
Answer: LCM of 418 and 423 is 176814.
2. What are the Factors of 418?
Answer: Factors of 418 are 1, 2, 11, 19, 22, 38, 209, 418. There are 8 integers that are factors of 418. The greatest factor of 418 is 418.
3. 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.
4. How to Find the LCM of 418 and 423?
Answer:
Least Common Multiple of 418 and 423 = 176814
Step 1: Find the prime factorization of 418
418 = 2 x 11 x 19
Step 2: Find the prime factorization of 423
423 = 3 x 3 x 47
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 176814 = 2 x 3 x 3 x 11 x 19 x 47
Step 4: Therefore, the least common multiple of 418 and 423 is 176814.