What is the Least Common Multiple of 1421 and 1429?

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 1421 and 1429 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1421 and 1429, than apply into the LCM equation.

GCF(1421,1429) = 1
LCM(1421,1429) = ( 1421 × 1429) / 1
LCM(1421,1429) = 2030609 / 1
LCM(1421,1429) = 2030609

Least Common Multiple (LCM) of 1421 and 1429 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 1421 and 1429. First we will calculate the prime factors of 1421 and 1429.

Prime Factorization of 1421

Prime Factorization of 1429

Now multiplying the highest exponent prime factors to calculate the LCM of 1421 and 1429.

LCM(1421,1429) = 7² × 29¹ × 1429¹
LCM(1421,1429) = 2030609