What is the Least Common Multiple of 71890 and 71909?

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 71890 and 71909 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 71890 and 71909, than apply into the LCM equation.

GCF(71890,71909) = 1
LCM(71890,71909) = ( 71890 × 71909) / 1
LCM(71890,71909) = 5169538010 / 1
LCM(71890,71909) = 5169538010

Least Common Multiple (LCM) of 71890 and 71909 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 71890 and 71909. First we will calculate the prime factors of 71890 and 71909.

Prime Factorization of 71890

Prime Factorization of 71909

Now multiplying the highest exponent prime factors to calculate the LCM of 71890 and 71909.

LCM(71890,71909) = 2¹ × 5¹ × 7¹ × 13¹ × 79¹ × 71909¹
LCM(71890,71909) = 5169538010