What is the Least Common Multiple of 55440 and 55447?
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 55440 and 55447 is 439140240.
LCM(55440,55447) = 439140240
Least Common Multiple of 55440 and 55447 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 55440 and 55447, than apply into the LCM equation.
GCF(55440,55447) = 7
LCM(55440,55447) = ( 55440 × 55447) / 7
LCM(55440,55447) = 3073981680 / 7
LCM(55440,55447) = 439140240
Least Common Multiple (LCM) of 55440 and 55447 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 55440 and 55447. First we will calculate the prime factors of 55440 and 55447.
Prime Factorization of 55440
Prime factors of 55440 are 2, 3, 5, 7, 11. Prime factorization of 55440 in exponential form is:
55440 = 24 × 32 × 51 × 71 × 111
Prime Factorization of 55447
Prime factors of 55447 are 7, 89. Prime factorization of 55447 in exponential form is:
55447 = 71 × 892
Now multiplying the highest exponent prime factors to calculate the LCM of 55440 and 55447.
LCM(55440,55447) = 24 × 32 × 51 × 71 × 111 × 892
LCM(55440,55447) = 439140240
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