What is the Least Common Multiple of 42921 and 42939?

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 42921 and 42939 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42921 and 42939, than apply into the LCM equation.

GCF(42921,42939) = 9
LCM(42921,42939) = ( 42921 × 42939) / 9
LCM(42921,42939) = 1842984819 / 9
LCM(42921,42939) = 204776091

Least Common Multiple (LCM) of 42921 and 42939 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42921 and 42939. First we will calculate the prime factors of 42921 and 42939.

Prime Factorization of 42921

Prime Factorization of 42939

Now multiplying the highest exponent prime factors to calculate the LCM of 42921 and 42939.

LCM(42921,42939) = 3² × 19¹ × 251¹ × 13¹ × 367¹
LCM(42921,42939) = 204776091