What is the Least Common Multiple of 15890 and 15902?

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 15890 and 15902 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15890 and 15902, than apply into the LCM equation.

GCF(15890,15902) = 2
LCM(15890,15902) = ( 15890 × 15902) / 2
LCM(15890,15902) = 252682780 / 2
LCM(15890,15902) = 126341390

Least Common Multiple (LCM) of 15890 and 15902 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15890 and 15902. First we will calculate the prime factors of 15890 and 15902.

Prime Factorization of 15890

Prime Factorization of 15902

Now multiplying the highest exponent prime factors to calculate the LCM of 15890 and 15902.

LCM(15890,15902) = 2¹ × 5¹ × 7¹ × 227¹ × 7951¹
LCM(15890,15902) = 126341390