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LCM for 21 and 29

"Least Common Multiple" Calculator

Least Common Multiple of

and

What's the Least Common Multiple (LCM) of 21 and 29?

Answer

LCM of 21 and 29 is 609

(Six hundred nine)

Finding LCM for 21 and 29 using GCF of these numbers

The first method to find LCM for numbers 21 and 29 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 21 and 29 is 1, so

LCM = (21 × 29) ÷ 1

LCM = 609 ÷ 1

LCM = 609

Finding LCM for 21 and 29 by Listing Multiples

The second method to find LCM for numbers 21 and 29 is to list out the common multiples for both numbers and pick the first one that matches:

Multiples of 21: 21, 42, 63, 84, 105, 126, 147, 168, 189, 210, 231, 252, 273, 294, 315, 336, 357, 378, 399, 420, 441, 462, 483, 504, 525, 546, 567, 588, 609, 630, 651

Multiples of 29: 29, 58, 87, 116, 145, 174, 203, 232, 261, 290, 319, 348, 377, 406, 435, 464, 493, 522, 551, 580, 609, 638, 667

So the LCM for 21 and 29 is 609

Finding LCM for 21 and 29 by Prime Factorization

Another method to find LCM for numbers 21 and 29 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:

All Prime Factors of 21: 3, 7 (exponent form: 31, 71)

All Prime Factors of 29: 29 (exponent form: 291)

31 × 71 × 291 = 609

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What is the LCM of 21 and 29?. Find the LCM of 21 and 29 - the smallest common multiple of two integers.
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LCM Table

Number 1Number 2LCM
629174
729203
829232
929261
1029290
1129319
1229348
1329377
1429406
1529435
1629464
1729493
1829522
1929551
2029580
2129609
2229638
2329667
2429696
2529725
2629754
2729783
2829812
292929
3029870
3129899
3229928
3329957
3429986
35291015

About "Least Common Multiple" Calculator

This calculator will help you find the Least Common Multiple (LCM) of two numbers. For example, it can help you find out what's the Least Common Multiple (LCM) of 21 and 29? (The answer is: 609). Select the first number (e.g. '21') and the second number (e.g. '29'). After that hit the 'Calculate' button.
Least Common Multiple (LCM) also known as the Lowest Common Multiple or Smallest Common Multiple of 2 numbers - it is the smallest positive integer that is divisible by both numbers

"Least Common Multiple" Calculator

Least Common Multiple of

and

FAQ

What's the Least Common Multiple (LCM) of 21 and 29?

LCM of 21 and 29 is 609

How to find the LCM of 21 and 29 using prime factorization?

To find the LCM of 21 and 29, find all prime factors of both numbers, then multiply the highest power of each prime factor. The result is 609.

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 21 and 29: LCM = 609, GCF = 1.

See Also