What is the Least Common Multiple of 69781 and 69785?

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 69781 and 69785 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 69781 and 69785, than apply into the LCM equation.

GCF(69781,69785) = 1
LCM(69781,69785) = ( 69781 × 69785) / 1
LCM(69781,69785) = 4869667085 / 1
LCM(69781,69785) = 4869667085

Least Common Multiple (LCM) of 69781 and 69785 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 69781 and 69785. First we will calculate the prime factors of 69781 and 69785.

Prime Factorization of 69781

Prime Factorization of 69785

Now multiplying the highest exponent prime factors to calculate the LCM of 69781 and 69785.

LCM(69781,69785) = 31¹ × 2251¹ × 5¹ × 17¹ × 821¹
LCM(69781,69785) = 4869667085