What is the Least Common Multiple of 21656 and 21671?

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 21656 and 21671 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 21656 and 21671, than apply into the LCM equation.

GCF(21656,21671) = 1
LCM(21656,21671) = ( 21656 × 21671) / 1
LCM(21656,21671) = 469307176 / 1
LCM(21656,21671) = 469307176

Least Common Multiple (LCM) of 21656 and 21671 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 21656 and 21671. First we will calculate the prime factors of 21656 and 21671.

Prime Factorization of 21656

Prime Factorization of 21671

Now multiplying the highest exponent prime factors to calculate the LCM of 21656 and 21671.

LCM(21656,21671) = 2³ × 2707¹ × 13¹ × 1667¹
LCM(21656,21671) = 469307176