What is the Least Common Multiple of 70621 and 70640?

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 70621 and 70640 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 70621 and 70640, than apply into the LCM equation.

GCF(70621,70640) = 1
LCM(70621,70640) = ( 70621 × 70640) / 1
LCM(70621,70640) = 4988667440 / 1
LCM(70621,70640) = 4988667440

Least Common Multiple (LCM) of 70621 and 70640 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 70621 and 70640. First we will calculate the prime factors of 70621 and 70640.

Prime Factorization of 70621

Prime Factorization of 70640

Now multiplying the highest exponent prime factors to calculate the LCM of 70621 and 70640.

LCM(70621,70640) = 70621¹ × 2⁴ × 5¹ × 883¹
LCM(70621,70640) = 4988667440