What is the Least Common Multiple of 20231 and 20251?

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 20231 and 20251 with GCF Formula

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 20231 and 20251, than apply into the LCM equation.

GCF(20231,20251) = 1
LCM(20231,20251) = ( 20231 × 20251) / 1
LCM(20231,20251) = 409697981 / 1
LCM(20231,20251) = 409697981

Least Common Multiple (LCM) of 20231 and 20251 with Primes

Least common multiple can be found by multiplying the highest exponent prime factors of 20231 and 20251. First we will calculate the prime factors of 20231 and 20251.

Prime Factorization of 20231

Prime Factorization of 20251

Now multiplying the highest exponent prime factors to calculate the LCM of 20231 and 20251.

LCM(20231,20251) = 20231¹ × 7¹ × 11¹ × 263¹
LCM(20231,20251) = 409697981