Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 74 and 77 the smallest integer that is 5698 that is divisible by both numbers.
Least Common Multiple (LCM) of 74 and 77 is 5698.
LCM(74,77) = 5698
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 74 and 77. First we will calculate the prime factors of 74 and 77.
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
Prime Factorization of 77
7 | 77 |
11 | 11 |
1 |
Prime factors of 77 are 7,11. Prime factorization of 77 in exponential form is:
77 = 71×111
Now multiplying the highest exponent prime factors to calculate the LCM of 74 and 77.
LCM(74,77) = 21×71×111×371
LCM(74,77) = 5698
Factors of 74
List of positive integer factors of 74 that divides 74 without a remainder.
1, 2, 37, 74
Factors of 77
List of positive integer factors of 77 that divides 77 without a remainder.
1, 7, 11, 77
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 74 and 77, than apply into the LCM equation.
GCF(74,77) = 1
LCM(74,77) = ( 74 × 77) / 1
LCM(74,77) = 5698 / 1
LCM(74,77) = 5698
(i) The LCM of 77 and 74 is associative
LCM of 74 and 77 = LCM of 77 and 74
1. What is the LCM of 74 and 77?
Answer: LCM of 74 and 77 is 5698.
2. 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.
3. What are the Factors of 77?
Answer: Factors of 77 are 1, 7, 11, 77. There are 4 integers that are factors of 77. The greatest factor of 77 is 77.
4. How to Find the LCM of 74 and 77?
Answer:
Least Common Multiple of 74 and 77 = 5698
Step 1: Find the prime factorization of 74
74 = 2 x 37
Step 2: Find the prime factorization of 77
77 = 7 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 = 5698 = 2 x 7 x 11 x 37
Step 4: Therefore, the least common multiple of 74 and 77 is 5698.