What is the Least Common Multiple of 21993 and 22013?

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 21993 and 22013 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21993 and 22013, than apply into the LCM equation.

GCF(21993,22013) = 1
LCM(21993,22013) = ( 21993 × 22013) / 1
LCM(21993,22013) = 484131909 / 1
LCM(21993,22013) = 484131909

Least Common Multiple (LCM) of 21993 and 22013 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21993 and 22013. First we will calculate the prime factors of 21993 and 22013.

Prime Factorization of 21993

Prime Factorization of 22013

Now multiplying the highest exponent prime factors to calculate the LCM of 21993 and 22013.

LCM(21993,22013) = 3¹ × 7331¹ × 22013¹
LCM(21993,22013) = 484131909