What is the Least Common Multiple of 21799 and 21815?

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 21799 and 21815 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21799 and 21815, than apply into the LCM equation.

GCF(21799,21815) = 1
LCM(21799,21815) = ( 21799 × 21815) / 1
LCM(21799,21815) = 475545185 / 1
LCM(21799,21815) = 475545185

Least Common Multiple (LCM) of 21799 and 21815 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21799 and 21815. First we will calculate the prime factors of 21799 and 21815.

Prime Factorization of 21799

Prime Factorization of 21815

Now multiplying the highest exponent prime factors to calculate the LCM of 21799 and 21815.

LCM(21799,21815) = 21799¹ × 5¹ × 4363¹
LCM(21799,21815) = 475545185