LCM for 81 and 64

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What's the Least Common Multiple (LCM) of 81 and 64?

Answer

LCM of 81 and 64 is
5,184

First common multiples: 5,184; 10,368; 15,552; …

5,184 is divisible by both: 5,184 ÷ 81 = 64; 5,184 ÷ 64 = 81 — and 64 and 81 share no factor but 1, so no smaller number is. As a common denominator: multiply the top and bottom of x/81 by 64 and of y/64 by 81.

81 and 64 are coprime (GCF = 1), so their LCM is simply the product: 81 × 64 = 5,184.

81 = 34

64 = 26

Prime8164Highest power
2—2626
334—34

— = power 0: the prime is not a factor of this number; the LCM takes it from the number that has it.

LCM = 26 × 34 = 5,184

More with these numbers

See Also

LCM Table

Number 1Number 2LCM
81493,969
81504,050
81511,377
81524,212
81534,293
8154162
81554,455
81564,536
81571,539
81584,698
81594,779
81601,620
81614,941
81625,022
8163567
81645,184
81655,265
81661,782
81675,427
81685,508
81691,863
81705,670
81715,751
8172648
81735,913
81745,994
81752,025
81766,156
81776,237
81782,106

FAQ

What's the Least Common Multiple (LCM) of 81 and 64?

LCM of 81 and 64 is 5,184

How to find the LCM of 81 and 64 using prime factorization?

To find the LCM of 81 and 64, find all prime factors of both numbers, then multiply the highest power of each prime factor. The result is 5,184.

What is the difference between LCM and GCF?

LCM (Least Common Multiple) is the smallest number divisible by both numbers, while GCF (Greatest Common Factor) is the largest number that divides both. For 81 and 64: LCM = 5,184, GCF = 1.

See Also