Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 747 and 755 the smallest integer that is 563985 that is divisible by both numbers.
Least Common Multiple (LCM) of 747 and 755 is 563985.
LCM(747,755) = 563985
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 747 and 755. First we will calculate the prime factors of 747 and 755.
Prime Factorization of 747
3 | 747 |
3 | 249 |
83 | 83 |
1 |
Prime factors of 747 are 3,83. Prime factorization of 747 in exponential form is:
747 = 32×831
Prime Factorization of 755
5 | 755 |
151 | 151 |
1 |
Prime factors of 755 are 5,151. Prime factorization of 755 in exponential form is:
755 = 51×1511
Now multiplying the highest exponent prime factors to calculate the LCM of 747 and 755.
LCM(747,755) = 32×51×831×1511
LCM(747,755) = 563985
Factors of 747
List of positive integer factors of 747 that divides 747 without a remainder.
1, 3, 9, 83, 249, 747
Factors of 755
List of positive integer factors of 755 that divides 755 without a remainder.
1, 5, 151, 755
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 747 and 755, than apply into the LCM equation.
GCF(747,755) = 1
LCM(747,755) = ( 747 × 755) / 1
LCM(747,755) = 563985 / 1
LCM(747,755) = 563985
(i) The LCM of 755 and 747 is associative
LCM of 747 and 755 = LCM of 755 and 747
1. What is the LCM of 747 and 755?
Answer: LCM of 747 and 755 is 563985.
2. What are the Factors of 747?
Answer: Factors of 747 are 1, 3, 9, 83, 249, 747. There are 6 integers that are factors of 747. The greatest factor of 747 is 747.
3. What are the Factors of 755?
Answer: Factors of 755 are 1, 5, 151, 755. There are 4 integers that are factors of 755. The greatest factor of 755 is 755.
4. How to Find the LCM of 747 and 755?
Answer:
Least Common Multiple of 747 and 755 = 563985
Step 1: Find the prime factorization of 747
747 = 3 x 3 x 83
Step 2: Find the prime factorization of 755
755 = 5 x 151
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 563985 = 3 x 3 x 5 x 83 x 151
Step 4: Therefore, the least common multiple of 747 and 755 is 563985.