What is the Least Common Multiple of 540 and 546?
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 540 and 546 is 49140.
LCM(540,546) = 49140
Least Common Multiple of 540 and 546 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 540 and 546, than apply into the LCM equation.
GCF(540,546) = 6
LCM(540,546) = ( 540 × 546) / 6
LCM(540,546) = 294840 / 6
LCM(540,546) = 49140
Least Common Multiple (LCM) of 540 and 546 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 540 and 546. First we will calculate the prime factors of 540 and 546.
Prime Factorization of 540
Prime factors of 540 are 2, 3, 5. Prime factorization of 540 in exponential form is:
540 = 22 × 33 × 51
Prime Factorization of 546
Prime factors of 546 are 2, 3, 7, 13. Prime factorization of 546 in exponential form is:
546 = 21 × 31 × 71 × 131
Now multiplying the highest exponent prime factors to calculate the LCM of 540 and 546.
LCM(540,546) = 22 × 33 × 51 × 71 × 131
LCM(540,546) = 49140
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