What is the Least Common Multiple of 90421 and 90431?

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 90421 and 90431 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 90421 and 90431, than apply into the LCM equation.

GCF(90421,90431) = 1
LCM(90421,90431) = ( 90421 × 90431) / 1
LCM(90421,90431) = 8176861451 / 1
LCM(90421,90431) = 8176861451

Least Common Multiple (LCM) of 90421 and 90431 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 90421 and 90431. First we will calculate the prime factors of 90421 and 90431.

Prime Factorization of 90421

Prime Factorization of 90431

Now multiplying the highest exponent prime factors to calculate the LCM of 90421 and 90431.

LCM(90421,90431) = 19¹ × 4759¹ × 11¹ × 8221¹
LCM(90421,90431) = 8176861451