What is the Least Common Multiple of 764 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 764 and 768 is 146688.
LCM(764,768) = 146688
Least Common Multiple of 764 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 764 and 768, than apply into the LCM equation.
GCF(764,768) = 4
LCM(764,768) = ( 764 × 768) / 4
LCM(764,768) = 586752 / 4
LCM(764,768) = 146688
Least Common Multiple (LCM) of 764 and 768 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 764 and 768. First we will calculate the prime factors of 764 and 768.
Prime Factorization of 764
Prime factors of 764 are 2, 191. Prime factorization of 764 in exponential form is:
764 = 22 × 1911
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 764 and 768.
LCM(764,768) = 28 × 1911 × 31
LCM(764,768) = 146688
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