What is the Least Common Multiple of 654 and 666?
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 654 and 666 is 72594.
LCM(654,666) = 72594
Least Common Multiple of 654 and 666 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 654 and 666, than apply into the LCM equation.
GCF(654,666) = 6
LCM(654,666) = ( 654 × 666) / 6
LCM(654,666) = 435564 / 6
LCM(654,666) = 72594
Least Common Multiple (LCM) of 654 and 666 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 654 and 666. First we will calculate the prime factors of 654 and 666.
Prime Factorization of 654
Prime factors of 654 are 2, 3, 109. Prime factorization of 654 in exponential form is:
654 = 21 × 31 × 1091
Prime Factorization of 666
Prime factors of 666 are 2, 3, 37. Prime factorization of 666 in exponential form is:
666 = 21 × 32 × 371
Now multiplying the highest exponent prime factors to calculate the LCM of 654 and 666.
LCM(654,666) = 21 × 32 × 1091 × 371
LCM(654,666) = 72594
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