What is the Least Common Multiple of 42689 and 42700?

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 42689 and 42700 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42689 and 42700, than apply into the LCM equation.

GCF(42689,42700) = 1
LCM(42689,42700) = ( 42689 × 42700) / 1
LCM(42689,42700) = 1822820300 / 1
LCM(42689,42700) = 1822820300

Least Common Multiple (LCM) of 42689 and 42700 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42689 and 42700. First we will calculate the prime factors of 42689 and 42700.

Prime Factorization of 42689

Prime Factorization of 42700

Now multiplying the highest exponent prime factors to calculate the LCM of 42689 and 42700.

LCM(42689,42700) = 42689¹ × 2² × 5² × 7¹ × 61¹
LCM(42689,42700) = 1822820300