What is the Least Common Multiple of 64940 and 64960?

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 64940 and 64960 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 64940 and 64960, than apply into the LCM equation.

GCF(64940,64960) = 20
LCM(64940,64960) = ( 64940 × 64960) / 20
LCM(64940,64960) = 4218502400 / 20
LCM(64940,64960) = 210925120

Least Common Multiple (LCM) of 64940 and 64960 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 64940 and 64960. First we will calculate the prime factors of 64940 and 64960.

Prime Factorization of 64940

Prime Factorization of 64960

Now multiplying the highest exponent prime factors to calculate the LCM of 64940 and 64960.

LCM(64940,64960) = 2⁶ × 5¹ × 17¹ × 191¹ × 7¹ × 29¹
LCM(64940,64960) = 210925120