What is the Least Common Multiple of 20531 and 20551?

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 20531 and 20551 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20531 and 20551, than apply into the LCM equation.

GCF(20531,20551) = 1
LCM(20531,20551) = ( 20531 × 20551) / 1
LCM(20531,20551) = 421932581 / 1
LCM(20531,20551) = 421932581

Least Common Multiple (LCM) of 20531 and 20551 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20531 and 20551. First we will calculate the prime factors of 20531 and 20551.

Prime Factorization of 20531

Prime Factorization of 20551

Now multiplying the highest exponent prime factors to calculate the LCM of 20531 and 20551.

LCM(20531,20551) = 7² × 419¹ × 20551¹
LCM(20531,20551) = 421932581