Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 64 and 66 the smallest integer that is 2112 that is divisible by both numbers.
Least Common Multiple (LCM) of 64 and 66 is 2112.
LCM(64,66) = 2112
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 64 and 66. First we will calculate the prime factors of 64 and 66.
Prime Factorization of 64
2 | 64 |
2 | 32 |
2 | 16 |
2 | 8 |
2 | 4 |
2 | 2 |
1 |
Prime factors of 64 are 2. Prime factorization of 64 in exponential form is:
64 = 26
Prime Factorization of 66
2 | 66 |
3 | 33 |
11 | 11 |
1 |
Prime factors of 66 are 2, 3,11. Prime factorization of 66 in exponential form is:
66 = 21×31×111
Now multiplying the highest exponent prime factors to calculate the LCM of 64 and 66.
LCM(64,66) = 26×31×111
LCM(64,66) = 2112
Factors of 64
List of positive integer factors of 64 that divides 64 without a remainder.
1, 2, 4, 8, 16, 32, 64
Factors of 66
List of positive integer factors of 66 that divides 66 without a remainder.
1, 2, 3, 6, 11, 22, 33, 66
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 64 and 66, than apply into the LCM equation.
GCF(64,66) = 2
LCM(64,66) = ( 64 × 66) / 2
LCM(64,66) = 4224 / 2
LCM(64,66) = 2112
(i) The LCM of 66 and 64 is associative
LCM of 64 and 66 = LCM of 66 and 64
1. What is the LCM of 64 and 66?
Answer: LCM of 64 and 66 is 2112.
2. What are the Factors of 64?
Answer: Factors of 64 are 1, 2, 4, 8, 16, 32, 64. There are 7 integers that are factors of 64. The greatest factor of 64 is 64.
3. What are the Factors of 66?
Answer: Factors of 66 are 1, 2, 3, 6, 11, 22, 33, 66. There are 8 integers that are factors of 66. The greatest factor of 66 is 66.
4. How to Find the LCM of 64 and 66?
Answer:
Least Common Multiple of 64 and 66 = 2112
Step 1: Find the prime factorization of 64
64 = 2 x 2 x 2 x 2 x 2 x 2
Step 2: Find the prime factorization of 66
66 = 2 x 3 x 11
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 2112 = 2 x 2 x 2 x 2 x 2 x 2 x 3 x 11
Step 4: Therefore, the least common multiple of 64 and 66 is 2112.