Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 748 and 755 the smallest integer that is 564740 that is divisible by both numbers.
Least Common Multiple (LCM) of 748 and 755 is 564740.
LCM(748,755) = 564740
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 748 and 755. First we will calculate the prime factors of 748 and 755.
Prime Factorization of 748
2 | 748 |
2 | 374 |
11 | 187 |
17 | 17 |
1 |
Prime factors of 748 are 2, 11,17. Prime factorization of 748 in exponential form is:
748 = 22×111×171
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 748 and 755.
LCM(748,755) = 22×51×111×171×1511
LCM(748,755) = 564740
Factors of 748
List of positive integer factors of 748 that divides 748 without a remainder.
1, 2, 4, 11, 17, 22, 34, 44, 68, 187, 374, 748
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 748 and 755, than apply into the LCM equation.
GCF(748,755) = 1
LCM(748,755) = ( 748 × 755) / 1
LCM(748,755) = 564740 / 1
LCM(748,755) = 564740
(i) The LCM of 755 and 748 is associative
LCM of 748 and 755 = LCM of 755 and 748
1. What is the LCM of 748 and 755?
Answer: LCM of 748 and 755 is 564740.
2. What are the Factors of 748?
Answer: Factors of 748 are 1, 2, 4, 11, 17, 22, 34, 44, 68, 187, 374, 748. There are 12 integers that are factors of 748. The greatest factor of 748 is 748.
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 748 and 755?
Answer:
Least Common Multiple of 748 and 755 = 564740
Step 1: Find the prime factorization of 748
748 = 2 x 2 x 11 x 17
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 = 564740 = 2 x 2 x 5 x 11 x 17 x 151
Step 4: Therefore, the least common multiple of 748 and 755 is 564740.