What is the Least Common Multiple of 67720 and 67738?
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 67720 and 67738 is 2293608680.
LCM(67720,67738) = 2293608680
Least Common Multiple of 67720 and 67738 with GCF Formula
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 67720 and 67738, than apply into the LCM equation.
GCF(67720,67738) = 2
LCM(67720,67738) = ( 67720 × 67738) / 2
LCM(67720,67738) = 4587217360 / 2
LCM(67720,67738) = 2293608680
Least Common Multiple (LCM) of 67720 and 67738 with Primes
Least common multiple can be found by multiplying the highest exponent prime factors of 67720 and 67738. First we will calculate the prime factors of 67720 and 67738.
Prime Factorization of 67720
Prime factors of 67720 are 2, 5, 1693. Prime factorization of 67720 in exponential form is:
67720 = 23 × 51 × 16931
Prime Factorization of 67738
Prime factors of 67738 are 2, 11, 3079. Prime factorization of 67738 in exponential form is:
67738 = 21 × 111 × 30791
Now multiplying the highest exponent prime factors to calculate the LCM of 67720 and 67738.
LCM(67720,67738) = 23 × 51 × 16931 × 111 × 30791
LCM(67720,67738) = 2293608680
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