What is the Least Common Multiple of 1911 and 1915?

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 1911 and 1915 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1911 and 1915, than apply into the LCM equation.

GCF(1911,1915) = 1
LCM(1911,1915) = ( 1911 × 1915) / 1
LCM(1911,1915) = 3659565 / 1
LCM(1911,1915) = 3659565

Least Common Multiple (LCM) of 1911 and 1915 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1911 and 1915. First we will calculate the prime factors of 1911 and 1915.

Prime Factorization of 1911

Prime Factorization of 1915

Now multiplying the highest exponent prime factors to calculate the LCM of 1911 and 1915.

LCM(1911,1915) = 3¹ × 7² × 13¹ × 5¹ × 383¹
LCM(1911,1915) = 3659565