What is the Least Common Multiple of 2215 and 2221?

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 2215 and 2221 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2215 and 2221, than apply into the LCM equation.

GCF(2215,2221) = 1
LCM(2215,2221) = ( 2215 × 2221) / 1
LCM(2215,2221) = 4919515 / 1
LCM(2215,2221) = 4919515

Least Common Multiple (LCM) of 2215 and 2221 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 2215 and 2221. First we will calculate the prime factors of 2215 and 2221.

Prime Factorization of 2215

Prime Factorization of 2221

Now multiplying the highest exponent prime factors to calculate the LCM of 2215 and 2221.

LCM(2215,2221) = 5¹ × 443¹ × 2221¹
LCM(2215,2221) = 4919515