GCF and LCM Calculator Logo

What is the Least Common Multiple of 15978 and 15995?

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 (LCM) of 15978 and 15995 is 255568110.

LCM(15978,15995) = 255568110

LCM Calculator and
and

Least Common Multiple of 15978 and 15995 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 15978 and 15995, than apply into the LCM equation.

GCF(15978,15995) = 1
LCM(15978,15995) = ( 15978 × 15995) / 1
LCM(15978,15995) = 255568110 / 1
LCM(15978,15995) = 255568110

Least Common Multiple (LCM) of 15978 and 15995 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 15978 and 15995. First we will calculate the prime factors of 15978 and 15995.

Prime Factorization of 15978

Prime factors of 15978 are 2, 3, 2663. Prime factorization of 15978 in exponential form is:

15978 = 21 × 31 × 26631

Prime Factorization of 15995

Prime factors of 15995 are 5, 7, 457. Prime factorization of 15995 in exponential form is:

15995 = 51 × 71 × 4571

Now multiplying the highest exponent prime factors to calculate the LCM of 15978 and 15995.

LCM(15978,15995) = 21 × 31 × 26631 × 51 × 71 × 4571
LCM(15978,15995) = 255568110