What is the Least Common Multiple of 17678 and 17690?

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 17678 and 17690 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 17678 and 17690, than apply into the LCM equation.

GCF(17678,17690) = 2
LCM(17678,17690) = ( 17678 × 17690) / 2
LCM(17678,17690) = 312723820 / 2
LCM(17678,17690) = 156361910

Least Common Multiple (LCM) of 17678 and 17690 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 17678 and 17690. First we will calculate the prime factors of 17678 and 17690.

Prime Factorization of 17678

Prime Factorization of 17690

Now multiplying the highest exponent prime factors to calculate the LCM of 17678 and 17690.

LCM(17678,17690) = 2¹ × 8839¹ × 5¹ × 29¹ × 61¹
LCM(17678,17690) = 156361910