What is the Least Common Multiple of 42656 and 42670?

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 42656 and 42670 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 42656 and 42670, than apply into the LCM equation.

GCF(42656,42670) = 2
LCM(42656,42670) = ( 42656 × 42670) / 2
LCM(42656,42670) = 1820131520 / 2
LCM(42656,42670) = 910065760

Least Common Multiple (LCM) of 42656 and 42670 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 42656 and 42670. First we will calculate the prime factors of 42656 and 42670.

Prime Factorization of 42656

Prime Factorization of 42670

Now multiplying the highest exponent prime factors to calculate the LCM of 42656 and 42670.

LCM(42656,42670) = 2⁵ × 31¹ × 43¹ × 5¹ × 17¹ × 251¹
LCM(42656,42670) = 910065760