What is the Least Common Multiple of 21671 and 21679?

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 21671 and 21679 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21671 and 21679, than apply into the LCM equation.

GCF(21671,21679) = 1
LCM(21671,21679) = ( 21671 × 21679) / 1
LCM(21671,21679) = 469805609 / 1
LCM(21671,21679) = 469805609

Least Common Multiple (LCM) of 21671 and 21679 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21671 and 21679. First we will calculate the prime factors of 21671 and 21679.

Prime Factorization of 21671

Prime Factorization of 21679

Now multiplying the highest exponent prime factors to calculate the LCM of 21671 and 21679.

LCM(21671,21679) = 13¹ × 1667¹ × 7¹ × 19¹ × 163¹
LCM(21671,21679) = 469805609