What is the Least Common Multiple of 8221 and 8240?

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 8221 and 8240 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 8221 and 8240, than apply into the LCM equation.

GCF(8221,8240) = 1
LCM(8221,8240) = ( 8221 × 8240) / 1
LCM(8221,8240) = 67741040 / 1
LCM(8221,8240) = 67741040

Least Common Multiple (LCM) of 8221 and 8240 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 8221 and 8240. First we will calculate the prime factors of 8221 and 8240.

Prime Factorization of 8221

Prime Factorization of 8240

Now multiplying the highest exponent prime factors to calculate the LCM of 8221 and 8240.

LCM(8221,8240) = 8221¹ × 2⁴ × 5¹ × 103¹
LCM(8221,8240) = 67741040