What is the Least Common Multiple of 83678 and 83690?

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 83678 and 83690 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 83678 and 83690, than apply into the LCM equation.

GCF(83678,83690) = 2
LCM(83678,83690) = ( 83678 × 83690) / 2
LCM(83678,83690) = 7003011820 / 2
LCM(83678,83690) = 3501505910

Least Common Multiple (LCM) of 83678 and 83690 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 83678 and 83690. First we will calculate the prime factors of 83678 and 83690.

Prime Factorization of 83678

Prime Factorization of 83690

Now multiplying the highest exponent prime factors to calculate the LCM of 83678 and 83690.

LCM(83678,83690) = 2¹ × 7¹ × 43¹ × 139¹ × 5¹ × 8369¹
LCM(83678,83690) = 3501505910