What is the Least Common Multiple of 768 and 774?
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 768 and 774 is 99072.
LCM(768,774) = 99072
Least Common Multiple of 768 and 774 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 768 and 774, than apply into the LCM equation.
GCF(768,774) = 6
LCM(768,774) = ( 768 × 774) / 6
LCM(768,774) = 594432 / 6
LCM(768,774) = 99072
Least Common Multiple (LCM) of 768 and 774 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 768 and 774. First we will calculate the prime factors of 768 and 774.
Prime Factorization of 768
Prime factors of 768 are 2, 3. Prime factorization of 768 in exponential form is:
768 = 28 × 31
Prime Factorization of 774
Prime factors of 774 are 2, 3, 43. Prime factorization of 774 in exponential form is:
774 = 21 × 32 × 431
Now multiplying the highest exponent prime factors to calculate the LCM of 768 and 774.
LCM(768,774) = 28 × 32 × 431
LCM(768,774) = 99072
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