What is the Least Common Multiple of 748 and 768?
Least common multiple or lowest common denominator (lcd) can be calculated in two way; with the LCM formula calculation of greatest common factor (GCF), or multiplying the prime factors with the highest exponent factor.
Least common multiple (LCM) of 748 and 768 is 143616.
LCM(748,768) = 143616
Least Common Multiple of 748 and 768 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 748 and 768, than apply into the LCM equation.
GCF(748,768) = 4
LCM(748,768) = ( 748 × 768) / 4
LCM(748,768) = 574464 / 4
LCM(748,768) = 143616
Least Common Multiple (LCM) of 748 and 768 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 748 and 768. First we will calculate the prime factors of 748 and 768.
Prime Factorization of 748
Prime factors of 748 are 2, 11, 17. Prime factorization of 748 in exponential form is:
748 = 22 × 111 × 171
Prime Factorization of 768
Prime factors of 768 are 2, 3. Prime factorization of 768 in exponential form is:
768 = 28 × 31
Now multiplying the highest exponent prime factors to calculate the LCM of 748 and 768.
LCM(748,768) = 28 × 111 × 171 × 31
LCM(748,768) = 143616
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