What is the Least Common Multiple of 71781 and 71787?

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 71781 and 71787 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 71781 and 71787, than apply into the LCM equation.

GCF(71781,71787) = 3
LCM(71781,71787) = ( 71781 × 71787) / 3
LCM(71781,71787) = 5152942647 / 3
LCM(71781,71787) = 1717647549

Least Common Multiple (LCM) of 71781 and 71787 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 71781 and 71787. First we will calculate the prime factors of 71781 and 71787.

Prime Factorization of 71781

Prime Factorization of 71787

Now multiplying the highest exponent prime factors to calculate the LCM of 71781 and 71787.

LCM(71781,71787) = 3¹ × 71¹ × 337¹ × 23929¹
LCM(71781,71787) = 1717647549