What is the Least Common Multiple of 5642 and 5656?

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 5642 and 5656 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 5642 and 5656, than apply into the LCM equation.

GCF(5642,5656) = 14
LCM(5642,5656) = ( 5642 × 5656) / 14
LCM(5642,5656) = 31911152 / 14
LCM(5642,5656) = 2279368

Least Common Multiple (LCM) of 5642 and 5656 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 5642 and 5656. First we will calculate the prime factors of 5642 and 5656.

Prime Factorization of 5642

Prime Factorization of 5656

Now multiplying the highest exponent prime factors to calculate the LCM of 5642 and 5656.

LCM(5642,5656) = 2³ × 7¹ × 13¹ × 31¹ × 101¹
LCM(5642,5656) = 2279368