What is the Least Common Multiple of 660 and 667?
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 660 and 667 is 440220.
LCM(660,667) = 440220
Least Common Multiple of 660 and 667 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 660 and 667, than apply into the LCM equation.
GCF(660,667) = 1
LCM(660,667) = ( 660 × 667) / 1
LCM(660,667) = 440220 / 1
LCM(660,667) = 440220
Least Common Multiple (LCM) of 660 and 667 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 660 and 667. First we will calculate the prime factors of 660 and 667.
Prime Factorization of 660
Prime factors of 660 are 2, 3, 5, 11. Prime factorization of 660 in exponential form is:
660 = 22 × 31 × 51 × 111
Prime Factorization of 667
Prime factors of 667 are 23, 29. Prime factorization of 667 in exponential form is:
667 = 231 × 291
Now multiplying the highest exponent prime factors to calculate the LCM of 660 and 667.
LCM(660,667) = 22 × 31 × 51 × 111 × 231 × 291
LCM(660,667) = 440220
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