What is the Least Common Multiple of 668 and 675?
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 668 and 675 is 450900.
LCM(668,675) = 450900
Least Common Multiple of 668 and 675 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 668 and 675, than apply into the LCM equation.
GCF(668,675) = 1
LCM(668,675) = ( 668 × 675) / 1
LCM(668,675) = 450900 / 1
LCM(668,675) = 450900
Least Common Multiple (LCM) of 668 and 675 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 668 and 675. First we will calculate the prime factors of 668 and 675.
Prime Factorization of 668
Prime factors of 668 are 2, 167. Prime factorization of 668 in exponential form is:
668 = 22 × 1671
Prime Factorization of 675
Prime factors of 675 are 3, 5. Prime factorization of 675 in exponential form is:
675 = 33 × 52
Now multiplying the highest exponent prime factors to calculate the LCM of 668 and 675.
LCM(668,675) = 22 × 1671 × 33 × 52
LCM(668,675) = 450900
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