What is the Least Common Multiple of 39658 and 39670?

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 39658 and 39670 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 39658 and 39670, than apply into the LCM equation.

GCF(39658,39670) = 2
LCM(39658,39670) = ( 39658 × 39670) / 2
LCM(39658,39670) = 1573232860 / 2
LCM(39658,39670) = 786616430

Least Common Multiple (LCM) of 39658 and 39670 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 39658 and 39670. First we will calculate the prime factors of 39658 and 39670.

Prime Factorization of 39658

Prime Factorization of 39670

Now multiplying the highest exponent prime factors to calculate the LCM of 39658 and 39670.

LCM(39658,39670) = 2¹ × 79¹ × 251¹ × 5¹ × 3967¹
LCM(39658,39670) = 786616430