What is the Least Common Multiple of 65390 and 65398?

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 65390 and 65398 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 65390 and 65398, than apply into the LCM equation.

GCF(65390,65398) = 2
LCM(65390,65398) = ( 65390 × 65398) / 2
LCM(65390,65398) = 4276375220 / 2
LCM(65390,65398) = 2138187610

Least Common Multiple (LCM) of 65390 and 65398 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 65390 and 65398. First we will calculate the prime factors of 65390 and 65398.

Prime Factorization of 65390

Prime Factorization of 65398

Now multiplying the highest exponent prime factors to calculate the LCM of 65390 and 65398.

LCM(65390,65398) = 2¹ × 5¹ × 13¹ × 503¹ × 19¹ × 1721¹
LCM(65390,65398) = 2138187610