Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 407 and 408 the smallest integer that is 166056 that is divisible by both numbers.
Least Common Multiple (LCM) of 407 and 408 is 166056.
LCM(407,408) = 166056
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 407 and 408. First we will calculate the prime factors of 407 and 408.
Prime Factorization of 407
11 | 407 |
37 | 37 |
1 |
Prime factors of 407 are 11,37. Prime factorization of 407 in exponential form is:
407 = 111×371
Prime Factorization of 408
2 | 408 |
2 | 204 |
2 | 102 |
3 | 51 |
17 | 17 |
1 |
Prime factors of 408 are 2, 3,17. Prime factorization of 408 in exponential form is:
408 = 23×31×171
Now multiplying the highest exponent prime factors to calculate the LCM of 407 and 408.
LCM(407,408) = 23×31×111×171×371
LCM(407,408) = 166056
Factors of 407
List of positive integer factors of 407 that divides 407 without a remainder.
1, 11, 37, 407
Factors of 408
List of positive integer factors of 408 that divides 408 without a remainder.
1, 2, 3, 4, 6, 8, 12, 17, 24, 34, 51, 68, 102, 136, 204, 408
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 407 and 408, than apply into the LCM equation.
GCF(407,408) = 1
LCM(407,408) = ( 407 × 408) / 1
LCM(407,408) = 166056 / 1
LCM(407,408) = 166056
(i) The LCM of 408 and 407 is associative
LCM of 407 and 408 = LCM of 408 and 407
1. What is the LCM of 407 and 408?
Answer: LCM of 407 and 408 is 166056.
2. What are the Factors of 407?
Answer: Factors of 407 are 1, 11, 37, 407. There are 4 integers that are factors of 407. The greatest factor of 407 is 407.
3. What are the Factors of 408?
Answer: Factors of 408 are 1, 2, 3, 4, 6, 8, 12, 17, 24, 34, 51, 68, 102, 136, 204, 408. There are 16 integers that are factors of 408. The greatest factor of 408 is 408.
4. How to Find the LCM of 407 and 408?
Answer:
Least Common Multiple of 407 and 408 = 166056
Step 1: Find the prime factorization of 407
407 = 11 x 37
Step 2: Find the prime factorization of 408
408 = 2 x 2 x 2 x 3 x 17
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 166056 = 2 x 2 x 2 x 3 x 11 x 17 x 37
Step 4: Therefore, the least common multiple of 407 and 408 is 166056.