What is the Least Common Multiple of 25215 and 25221?

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 25215 and 25221 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 25215 and 25221, than apply into the LCM equation.

GCF(25215,25221) = 3
LCM(25215,25221) = ( 25215 × 25221) / 3
LCM(25215,25221) = 635947515 / 3
LCM(25215,25221) = 211982505

Least Common Multiple (LCM) of 25215 and 25221 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 25215 and 25221. First we will calculate the prime factors of 25215 and 25221.

Prime Factorization of 25215

Prime Factorization of 25221

Now multiplying the highest exponent prime factors to calculate the LCM of 25215 and 25221.

LCM(25215,25221) = 3¹ × 5¹ × 41² × 7¹ × 1201¹
LCM(25215,25221) = 211982505