What is the Least Common Multiple of 71228 and 71240?

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 71228 and 71240 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 71228 and 71240, than apply into the LCM equation.

GCF(71228,71240) = 4
LCM(71228,71240) = ( 71228 × 71240) / 4
LCM(71228,71240) = 5074282720 / 4
LCM(71228,71240) = 1268570680

Least Common Multiple (LCM) of 71228 and 71240 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 71228 and 71240. First we will calculate the prime factors of 71228 and 71240.

Prime Factorization of 71228

Prime Factorization of 71240

Now multiplying the highest exponent prime factors to calculate the LCM of 71228 and 71240.

LCM(71228,71240) = 2³ × 17807¹ × 5¹ × 13¹ × 137¹
LCM(71228,71240) = 1268570680