What is the Least Common Multiple of 13990 and 13998?

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 13990 and 13998 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 13990 and 13998, than apply into the LCM equation.

GCF(13990,13998) = 2
LCM(13990,13998) = ( 13990 × 13998) / 2
LCM(13990,13998) = 195832020 / 2
LCM(13990,13998) = 97916010

Least Common Multiple (LCM) of 13990 and 13998 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 13990 and 13998. First we will calculate the prime factors of 13990 and 13998.

Prime Factorization of 13990

Prime Factorization of 13998

Now multiplying the highest exponent prime factors to calculate the LCM of 13990 and 13998.

LCM(13990,13998) = 2¹ × 5¹ × 1399¹ × 3¹ × 2333¹
LCM(13990,13998) = 97916010