What is the Least Common Multiple of 42742 and 42749?

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 42742 and 42749 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42742 and 42749, than apply into the LCM equation.

GCF(42742,42749) = 7
LCM(42742,42749) = ( 42742 × 42749) / 7
LCM(42742,42749) = 1827177758 / 7
LCM(42742,42749) = 261025394

Least Common Multiple (LCM) of 42742 and 42749 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42742 and 42749. First we will calculate the prime factors of 42742 and 42749.

Prime Factorization of 42742

Prime Factorization of 42749

Now multiplying the highest exponent prime factors to calculate the LCM of 42742 and 42749.

LCM(42742,42749) = 2¹ × 7¹ × 43¹ × 71¹ × 31¹ × 197¹
LCM(42742,42749) = 261025394