What is the Least Common Multiple of 18681 and 18690?

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 of 18681 and 18690 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 18681 and 18690, than apply into the LCM equation.

GCF(18681,18690) = 3
LCM(18681,18690) = ( 18681 × 18690) / 3
LCM(18681,18690) = 349147890 / 3
LCM(18681,18690) = 116382630

Least Common Multiple (LCM) of 18681 and 18690 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 18681 and 18690. First we will calculate the prime factors of 18681 and 18690.

Prime Factorization of 18681

Prime Factorization of 18690

Now multiplying the highest exponent prime factors to calculate the LCM of 18681 and 18690.

LCM(18681,18690) = 3¹ × 13¹ × 479¹ × 2¹ × 5¹ × 7¹ × 89¹
LCM(18681,18690) = 116382630