What is the Least Common Multiple of 42990 and 42997?

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 42990 and 42997 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42990 and 42997, than apply into the LCM equation.

GCF(42990,42997) = 1
LCM(42990,42997) = ( 42990 × 42997) / 1
LCM(42990,42997) = 1848441030 / 1
LCM(42990,42997) = 1848441030

Least Common Multiple (LCM) of 42990 and 42997 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42990 and 42997. First we will calculate the prime factors of 42990 and 42997.

Prime Factorization of 42990

Prime Factorization of 42997

Now multiplying the highest exponent prime factors to calculate the LCM of 42990 and 42997.

LCM(42990,42997) = 2¹ × 3¹ × 5¹ × 1433¹ × 19¹ × 31¹ × 73¹
LCM(42990,42997) = 1848441030