What is the Least Common Multiple of 31398 and 31402?

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 31398 and 31402 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 31398 and 31402, than apply into the LCM equation.

GCF(31398,31402) = 2
LCM(31398,31402) = ( 31398 × 31402) / 2
LCM(31398,31402) = 985959996 / 2
LCM(31398,31402) = 492979998

Least Common Multiple (LCM) of 31398 and 31402 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 31398 and 31402. First we will calculate the prime factors of 31398 and 31402.

Prime Factorization of 31398

Prime Factorization of 31402

Now multiplying the highest exponent prime factors to calculate the LCM of 31398 and 31402.

LCM(31398,31402) = 2¹ × 3¹ × 5233¹ × 7¹ × 2243¹
LCM(31398,31402) = 492979998