What is the Least Common Multiple of 1281 and 1301?

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 1281 and 1301 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1281 and 1301, than apply into the LCM equation.

GCF(1281,1301) = 1
LCM(1281,1301) = ( 1281 × 1301) / 1
LCM(1281,1301) = 1666581 / 1
LCM(1281,1301) = 1666581

Least Common Multiple (LCM) of 1281 and 1301 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1281 and 1301. First we will calculate the prime factors of 1281 and 1301.

Prime Factorization of 1281

Prime Factorization of 1301

Now multiplying the highest exponent prime factors to calculate the LCM of 1281 and 1301.

LCM(1281,1301) = 3¹ × 7¹ × 61¹ × 1301¹
LCM(1281,1301) = 1666581