What is the Least Common Multiple of 21820 and 21835?

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 21820 and 21835 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21820 and 21835, than apply into the LCM equation.

GCF(21820,21835) = 5
LCM(21820,21835) = ( 21820 × 21835) / 5
LCM(21820,21835) = 476439700 / 5
LCM(21820,21835) = 95287940

Least Common Multiple (LCM) of 21820 and 21835 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21820 and 21835. First we will calculate the prime factors of 21820 and 21835.

Prime Factorization of 21820

Prime Factorization of 21835

Now multiplying the highest exponent prime factors to calculate the LCM of 21820 and 21835.

LCM(21820,21835) = 2² × 5¹ × 1091¹ × 11¹ × 397¹
LCM(21820,21835) = 95287940