What is the Least Common Multiple of 71209 and 71221?

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 71209 and 71221 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 71209 and 71221, than apply into the LCM equation.

GCF(71209,71221) = 1
LCM(71209,71221) = ( 71209 × 71221) / 1
LCM(71209,71221) = 5071576189 / 1
LCM(71209,71221) = 5071576189

Least Common Multiple (LCM) of 71209 and 71221 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 71209 and 71221. First we will calculate the prime factors of 71209 and 71221.

Prime Factorization of 71209

Prime Factorization of 71221

Now multiplying the highest exponent prime factors to calculate the LCM of 71209 and 71221.

LCM(71209,71221) = 71209¹ × 67¹ × 1063¹
LCM(71209,71221) = 5071576189