What is the Least Common Multiple of 67785 and 67790?
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 67785 and 67790 is 919029030.
LCM(67785,67790) = 919029030
Least Common Multiple of 67785 and 67790 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 67785 and 67790, than apply into the LCM equation.
GCF(67785,67790) = 5
LCM(67785,67790) = ( 67785 × 67790) / 5
LCM(67785,67790) = 4595145150 / 5
LCM(67785,67790) = 919029030
Least Common Multiple (LCM) of 67785 and 67790 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 67785 and 67790. First we will calculate the prime factors of 67785 and 67790.
Prime Factorization of 67785
Prime factors of 67785 are 3, 5, 4519. Prime factorization of 67785 in exponential form is:
67785 = 31 × 51 × 45191
Prime Factorization of 67790
Prime factors of 67790 are 2, 5, 6779. Prime factorization of 67790 in exponential form is:
67790 = 21 × 51 × 67791
Now multiplying the highest exponent prime factors to calculate the LCM of 67785 and 67790.
LCM(67785,67790) = 31 × 51 × 45191 × 21 × 67791
LCM(67785,67790) = 919029030
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