What is the Least Common Multiple of 1787 and 1807?

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 1787 and 1807 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1787 and 1807, than apply into the LCM equation.

GCF(1787,1807) = 1
LCM(1787,1807) = ( 1787 × 1807) / 1
LCM(1787,1807) = 3229109 / 1
LCM(1787,1807) = 3229109

Least Common Multiple (LCM) of 1787 and 1807 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1787 and 1807. First we will calculate the prime factors of 1787 and 1807.

Prime Factorization of 1787

Prime Factorization of 1807

Now multiplying the highest exponent prime factors to calculate the LCM of 1787 and 1807.

LCM(1787,1807) = 1787¹ × 13¹ × 139¹
LCM(1787,1807) = 3229109