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 76 the smallest integer that is 1216 that is divisible by both numbers.
Least Common Multiple (LCM) of 64 and 76 is 1216.
LCM(64,76) = 1216
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 76. First we will calculate the prime factors of 64 and 76.
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 76
2 | 76 |
2 | 38 |
19 | 19 |
1 |
Prime factors of 76 are 2,19. Prime factorization of 76 in exponential form is:
76 = 22×191
Now multiplying the highest exponent prime factors to calculate the LCM of 64 and 76.
LCM(64,76) = 26×191
LCM(64,76) = 1216
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 76
List of positive integer factors of 76 that divides 76 without a remainder.
1, 2, 4, 19, 38, 76
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 64 and 76, than apply into the LCM equation.
GCF(64,76) = 4
LCM(64,76) = ( 64 × 76) / 4
LCM(64,76) = 4864 / 4
LCM(64,76) = 1216
(i) The LCM of 76 and 64 is associative
LCM of 64 and 76 = LCM of 76 and 64
1. What is the LCM of 64 and 76?
Answer: LCM of 64 and 76 is 1216.
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 76?
Answer: Factors of 76 are 1, 2, 4, 19, 38, 76. There are 6 integers that are factors of 76. The greatest factor of 76 is 76.
4. How to Find the LCM of 64 and 76?
Answer:
Least Common Multiple of 64 and 76 = 1216
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 76
76 = 2 x 2 x 19
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 1216 = 2 x 2 x 2 x 2 x 2 x 2 x 19
Step 4: Therefore, the least common multiple of 64 and 76 is 1216.