Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 100 and 108 the smallest integer that is 2700 that is divisible by both numbers.
Least Common Multiple (LCM) of 100 and 108 is 2700.
LCM(100,108) = 2700
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 100 and 108. First we will calculate the prime factors of 100 and 108.
Prime Factorization of 100
2 | 100 |
2 | 50 |
5 | 25 |
5 | 5 |
1 |
Prime factors of 100 are 2,5. Prime factorization of 100 in exponential form is:
100 = 22×52
Prime Factorization of 108
2 | 108 |
2 | 54 |
3 | 27 |
3 | 9 |
3 | 3 |
1 |
Prime factors of 108 are 2,3. Prime factorization of 108 in exponential form is:
108 = 22×33
Now multiplying the highest exponent prime factors to calculate the LCM of 100 and 108.
LCM(100,108) = 22×33×52
LCM(100,108) = 2700
Factors of 100
List of positive integer factors of 100 that divides 100 without a remainder.
1, 2, 4, 5, 10, 20, 25, 50, 100
Factors of 108
List of positive integer factors of 108 that divides 108 without a remainder.
1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 100 and 108, than apply into the LCM equation.
GCF(100,108) = 4
LCM(100,108) = ( 100 × 108) / 4
LCM(100,108) = 10800 / 4
LCM(100,108) = 2700
(i) The LCM of 108 and 100 is associative
LCM of 100 and 108 = LCM of 108 and 100
1. What is the LCM of 100 and 108?
Answer: LCM of 100 and 108 is 2700.
2. What are the Factors of 100?
Answer: Factors of 100 are 1, 2, 4, 5, 10, 20, 25, 50, 100. There are 9 integers that are factors of 100. The greatest factor of 100 is 100.
3. What are the Factors of 108?
Answer: Factors of 108 are 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108. There are 12 integers that are factors of 108. The greatest factor of 108 is 108.
4. How to Find the LCM of 100 and 108?
Answer:
Least Common Multiple of 100 and 108 = 2700
Step 1: Find the prime factorization of 100
100 = 2 x 2 x 5 x 5
Step 2: Find the prime factorization of 108
108 = 2 x 2 x 3 x 3 x 3
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 2700 = 2 x 2 x 3 x 3 x 3 x 5 x 5
Step 4: Therefore, the least common multiple of 100 and 108 is 2700.