What is the Least Common Multiple of 63980 and 63992?

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 63980 and 63992 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 63980 and 63992, than apply into the LCM equation.

GCF(63980,63992) = 4
LCM(63980,63992) = ( 63980 × 63992) / 4
LCM(63980,63992) = 4094208160 / 4
LCM(63980,63992) = 1023552040

Least Common Multiple (LCM) of 63980 and 63992 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 63980 and 63992. First we will calculate the prime factors of 63980 and 63992.

Prime Factorization of 63980

Prime Factorization of 63992

Now multiplying the highest exponent prime factors to calculate the LCM of 63980 and 63992.

LCM(63980,63992) = 2³ × 5¹ × 7¹ × 457¹ × 19¹ × 421¹
LCM(63980,63992) = 1023552040