What is the Least Common Multiple of 42690 and 42709?

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 42690 and 42709 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42690 and 42709, than apply into the LCM equation.

GCF(42690,42709) = 1
LCM(42690,42709) = ( 42690 × 42709) / 1
LCM(42690,42709) = 1823247210 / 1
LCM(42690,42709) = 1823247210

Least Common Multiple (LCM) of 42690 and 42709 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42690 and 42709. First we will calculate the prime factors of 42690 and 42709.

Prime Factorization of 42690

Prime Factorization of 42709

Now multiplying the highest exponent prime factors to calculate the LCM of 42690 and 42709.

LCM(42690,42709) = 2¹ × 3¹ × 5¹ × 1423¹ × 42709¹
LCM(42690,42709) = 1823247210