What is the Least Common Multiple of 78490 and 78505?

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 78490 and 78505 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 78490 and 78505, than apply into the LCM equation.

GCF(78490,78505) = 5
LCM(78490,78505) = ( 78490 × 78505) / 5
LCM(78490,78505) = 6161857450 / 5
LCM(78490,78505) = 1232371490

Least Common Multiple (LCM) of 78490 and 78505 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 78490 and 78505. First we will calculate the prime factors of 78490 and 78505.

Prime Factorization of 78490

Prime Factorization of 78505

Now multiplying the highest exponent prime factors to calculate the LCM of 78490 and 78505.

LCM(78490,78505) = 2¹ × 5¹ × 47¹ × 167¹ × 7¹ × 2243¹
LCM(78490,78505) = 1232371490