LCM for 10, 25 and 40

"Least Common Multiple of 3 Numbers" Calculator
Least Common Multiple of
,
and

What's the Least Common Multiple (LCM) of 10, 25 and 40?

Answer

LCM of 10, 25 and 40 is
200

(Two hundred)

200 is the smallest positive integer that 10, 25 and 40 all divide without a remainder — every other common multiple of the three is a multiple of it.

Finding the LCM of 10, 25 and 40 by Prime Factorization

Split all three numbers into prime factors, then take every prime that shows up in at least one of them, each raised to the highest power it reaches there. Multiplying those highest powers gives the least common multiple:

All Prime Factors of 10: 2 × 5 (exponent form: 2 × 5)

All Prime Factors of 25: 5 × 5 (exponent form: 52)

All Prime Factors of 40: 2 × 2 × 2 × 5 (exponent form: 23 × 5)

Prime factor102540Highest power
22—2323
5552552

LCM = 23 × 52 = 200

Checking the LCM of 10, 25 and 40 Two Numbers at a Time

The least common multiple is associative, so three numbers can be handled as two pairs: first the LCM of the first two, then the LCM of that value and the third. Each pair goes through the two-number formula, which uses the greatest common divisor:

LCM(a, b) = (a × b) ÷ GCD(a, b)

LCM(10, 25) = (10 × 25) ÷ 5 = 250 ÷ 5 = 50

LCM(50, 40) = (50 × 40) ÷ 10 = 2,000 ÷ 10 = 200

LCM(10, 25, 40) = 200

The pairs may be taken in any order — 25 and 40 first, then 10 — and the answer is the same 200. That is exactly why the two routes on this page agree.

Related Calculations

See Also

About "Least Common Multiple of 3 Numbers" Calculator

This calculator finds the Least Common Multiple (LCM) of three numbers at once, without doing it in two passes. For example, it can help you find out what's the Least Common Multiple (LCM) of 10, 25 and 40? (The answer is: 200). Enter the first number (e.g. '10'), the second (e.g. '25') and the third (e.g. '40'), then hit the 'Calculate' button.
The Least Common Multiple of three numbers is the smallest positive integer that all three of them divide without a remainder
"Least Common Multiple of 3 Numbers" Calculator
Least Common Multiple of
,
and

LCM Table

Number 1Number 2Number 3LCM
10252550
102526650
1025271,350
102528700
1025291,450
102530150
1025311,550
102532800
1025331,650
102534850
102535350
102536900
1025371,850
102538950
1025391,950
102540200
1025412,050
1025421,050
1025432,150
1025441,100
102545450
1025461,150
1025472,350
1025481,200
1025492,450
10255050
1025512,550
1025521,300
1025532,650
1025541,350

FAQ

What's the Least Common Multiple (LCM) of 10, 25 and 40?

LCM of 10, 25 and 40 is 200

How to find the LCM of 10, 25 and 40 by prime factorization?

Take every prime that appears in 10, 25 and 40 to the highest power it reaches in any one of them and multiply: 2³ × 5² = 200.

Can you get the LCM of 10, 25 and 40 two numbers at a time?

Yes, and it is the check this page prints. The LCM of 10 and 25 is 50, and the LCM of 50 and 40 is 200 — the same answer, because the least common multiple is associative and does not depend on the order of the three numbers.

Is 200 divisible by 10, 25 and 40?

Yes, and by definition it is the smallest positive integer that is: 200 ÷ 10, 200 ÷ 25 and 200 ÷ 40 all come out whole. Any other common multiple of 10, 25 and 40 is a multiple of 200.

See Also