What is the Least Common Multiple of 123 and 137?
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 123 and 137 is 16851.
LCM(123,137) = 16851
Least Common Multiple of 123 and 137 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 123 and 137, than apply into the LCM equation.
GCF(123,137) = 1
LCM(123,137) = ( 123 × 137) / 1
LCM(123,137) = 16851 / 1
LCM(123,137) = 16851
Least Common Multiple (LCM) of 123 and 137 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 123 and 137. First we will calculate the prime factors of 123 and 137.
Prime Factorization of 123
Prime factors of 123 are 3, 41. Prime factorization of 123 in exponential form is:
123 = 31 × 411
Prime Factorization of 137
Prime factors of 137 are 137. Prime factorization of 137 in exponential form is:
137 = 1371
Now multiplying the highest exponent prime factors to calculate the LCM of 123 and 137.
LCM(123,137) = 31 × 411 × 1371
LCM(123,137) = 16851
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