What is the Least Common Multiple of 64778 and 64789?

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 64778 and 64789 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 64778 and 64789, than apply into the LCM equation.

GCF(64778,64789) = 1
LCM(64778,64789) = ( 64778 × 64789) / 1
LCM(64778,64789) = 4196901842 / 1
LCM(64778,64789) = 4196901842

Least Common Multiple (LCM) of 64778 and 64789 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 64778 and 64789. First we will calculate the prime factors of 64778 and 64789.

Prime Factorization of 64778

Prime Factorization of 64789

Now multiplying the highest exponent prime factors to calculate the LCM of 64778 and 64789.

LCM(64778,64789) = 2¹ × 7² × 661¹ × 67¹ × 967¹
LCM(64778,64789) = 4196901842