What is the Least Common Multiple of 86912 and 86921?

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 86912 and 86921 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 86912 and 86921, than apply into the LCM equation.

GCF(86912,86921) = 1
LCM(86912,86921) = ( 86912 × 86921) / 1
LCM(86912,86921) = 7554477952 / 1
LCM(86912,86921) = 7554477952

Least Common Multiple (LCM) of 86912 and 86921 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 86912 and 86921. First we will calculate the prime factors of 86912 and 86921.

Prime Factorization of 86912

Prime Factorization of 86921

Now multiplying the highest exponent prime factors to calculate the LCM of 86912 and 86921.

LCM(86912,86921) = 2⁷ × 7¹ × 97¹ × 17¹ × 5113¹
LCM(86912,86921) = 7554477952