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 71 the smallest integer that is 4544 that is divisible by both numbers.
Least Common Multiple (LCM) of 64 and 71 is 4544.
LCM(64,71) = 4544
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 71. First we will calculate the prime factors of 64 and 71.
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 71
71 | 71 |
1 |
Prime factors of 71 are 71. Prime factorization of 71 in exponential form is:
71 = 711
Now multiplying the highest exponent prime factors to calculate the LCM of 64 and 71.
LCM(64,71) = 26×711
LCM(64,71) = 4544
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 71
List of positive integer factors of 71 that divides 71 without a remainder.
1, 71
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 64 and 71, than apply into the LCM equation.
GCF(64,71) = 1
LCM(64,71) = ( 64 × 71) / 1
LCM(64,71) = 4544 / 1
LCM(64,71) = 4544
(i) The LCM of 71 and 64 is associative
LCM of 64 and 71 = LCM of 71 and 64
1. What is the LCM of 64 and 71?
Answer: LCM of 64 and 71 is 4544.
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 71?
Answer: Factors of 71 are 1, 71. There are 2 integers that are factors of 71. The greatest factor of 71 is 71.
4. How to Find the LCM of 64 and 71?
Answer:
Least Common Multiple of 64 and 71 = 4544
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 71
71 = 71
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 4544 = 2 x 2 x 2 x 2 x 2 x 2 x 71
Step 4: Therefore, the least common multiple of 64 and 71 is 4544.