Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 66 and 74 the smallest integer that is 2442 that is divisible by both numbers.
Least Common Multiple (LCM) of 66 and 74 is 2442.
LCM(66,74) = 2442
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 66 and 74. First we will calculate the prime factors of 66 and 74.
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
Prime Factorization of 74
2 | 74 |
37 | 37 |
1 |
Prime factors of 74 are 2,37. Prime factorization of 74 in exponential form is:
74 = 21×371
Now multiplying the highest exponent prime factors to calculate the LCM of 66 and 74.
LCM(66,74) = 21×31×111×371
LCM(66,74) = 2442
Factors of 66
List of positive integer factors of 66 that divides 66 without a remainder.
1, 2, 3, 6, 11, 22, 33, 66
Factors of 74
List of positive integer factors of 74 that divides 74 without a remainder.
1, 2, 37, 74
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 66 and 74, than apply into the LCM equation.
GCF(66,74) = 2
LCM(66,74) = ( 66 × 74) / 2
LCM(66,74) = 4884 / 2
LCM(66,74) = 2442
(i) The LCM of 74 and 66 is associative
LCM of 66 and 74 = LCM of 74 and 66
1. What is the LCM of 66 and 74?
Answer: LCM of 66 and 74 is 2442.
2. 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.
3. What are the Factors of 74?
Answer: Factors of 74 are 1, 2, 37, 74. There are 4 integers that are factors of 74. The greatest factor of 74 is 74.
4. How to Find the LCM of 66 and 74?
Answer:
Least Common Multiple of 66 and 74 = 2442
Step 1: Find the prime factorization of 66
66 = 2 x 3 x 11
Step 2: Find the prime factorization of 74
74 = 2 x 37
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 2442 = 2 x 3 x 11 x 37
Step 4: Therefore, the least common multiple of 66 and 74 is 2442.