Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 456 and 458 the smallest integer that is 104424 that is divisible by both numbers.
Least Common Multiple (LCM) of 456 and 458 is 104424.
LCM(456,458) = 104424
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 456 and 458. First we will calculate the prime factors of 456 and 458.
Prime Factorization of 456
2 | 456 |
2 | 228 |
2 | 114 |
3 | 57 |
19 | 19 |
1 |
Prime factors of 456 are 2, 3,19. Prime factorization of 456 in exponential form is:
456 = 23×31×191
Prime Factorization of 458
2 | 458 |
229 | 229 |
1 |
Prime factors of 458 are 2,229. Prime factorization of 458 in exponential form is:
458 = 21×2291
Now multiplying the highest exponent prime factors to calculate the LCM of 456 and 458.
LCM(456,458) = 23×31×191×2291
LCM(456,458) = 104424
Factors of 456
List of positive integer factors of 456 that divides 456 without a remainder.
1, 2, 3, 4, 6, 8, 12, 19, 24, 38, 57, 76, 114, 152, 228, 456
Factors of 458
List of positive integer factors of 458 that divides 458 without a remainder.
1, 2, 229, 458
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 456 and 458, than apply into the LCM equation.
GCF(456,458) = 2
LCM(456,458) = ( 456 × 458) / 2
LCM(456,458) = 208848 / 2
LCM(456,458) = 104424
(i) The LCM of 458 and 456 is associative
LCM of 456 and 458 = LCM of 458 and 456
1. What is the LCM of 456 and 458?
Answer: LCM of 456 and 458 is 104424.
2. What are the Factors of 456?
Answer: Factors of 456 are 1, 2, 3, 4, 6, 8, 12, 19, 24, 38, 57, 76, 114, 152, 228, 456. There are 16 integers that are factors of 456. The greatest factor of 456 is 456.
3. What are the Factors of 458?
Answer: Factors of 458 are 1, 2, 229, 458. There are 4 integers that are factors of 458. The greatest factor of 458 is 458.
4. How to Find the LCM of 456 and 458?
Answer:
Least Common Multiple of 456 and 458 = 104424
Step 1: Find the prime factorization of 456
456 = 2 x 2 x 2 x 3 x 19
Step 2: Find the prime factorization of 458
458 = 2 x 229
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 104424 = 2 x 2 x 2 x 3 x 19 x 229
Step 4: Therefore, the least common multiple of 456 and 458 is 104424.