What is the Least Common Multiple of 69780 and 69789?

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 69780 and 69789 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 69780 and 69789, than apply into the LCM equation.

GCF(69780,69789) = 3
LCM(69780,69789) = ( 69780 × 69789) / 3
LCM(69780,69789) = 4869876420 / 3
LCM(69780,69789) = 1623292140

Least Common Multiple (LCM) of 69780 and 69789 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 69780 and 69789. First we will calculate the prime factors of 69780 and 69789.

Prime Factorization of 69780

Prime Factorization of 69789

Now multiplying the highest exponent prime factors to calculate the LCM of 69780 and 69789.

LCM(69780,69789) = 2² × 3¹ × 5¹ × 1163¹ × 43¹ × 541¹
LCM(69780,69789) = 1623292140