What is the Least Common Multiple of 15740 and 15758?

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 15740 and 15758 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15740 and 15758, than apply into the LCM equation.

GCF(15740,15758) = 2
LCM(15740,15758) = ( 15740 × 15758) / 2
LCM(15740,15758) = 248030920 / 2
LCM(15740,15758) = 124015460

Least Common Multiple (LCM) of 15740 and 15758 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15740 and 15758. First we will calculate the prime factors of 15740 and 15758.

Prime Factorization of 15740

Prime Factorization of 15758

Now multiplying the highest exponent prime factors to calculate the LCM of 15740 and 15758.

LCM(15740,15758) = 2² × 5¹ × 787¹ × 7879¹
LCM(15740,15758) = 124015460