What is the Least Common Multiple of 17780 and 17787?

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 17780 and 17787 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 17780 and 17787, than apply into the LCM equation.

GCF(17780,17787) = 7
LCM(17780,17787) = ( 17780 × 17787) / 7
LCM(17780,17787) = 316252860 / 7
LCM(17780,17787) = 45178980

Least Common Multiple (LCM) of 17780 and 17787 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 17780 and 17787. First we will calculate the prime factors of 17780 and 17787.

Prime Factorization of 17780

Prime Factorization of 17787

Now multiplying the highest exponent prime factors to calculate the LCM of 17780 and 17787.

LCM(17780,17787) = 2² × 5¹ × 7² × 127¹ × 3¹ × 11²
LCM(17780,17787) = 45178980