LCM for 19 and 34

What's the Least Common Multiple (LCM) of 19 and 34?

Answer: LCM of 19 and 34 is 646

(Six hundred forty-six)

Finding LCM for 19 and 34 using GCF's of these numbers

The first method to find LCM for numbers 19 and 34 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 19 and 34 is 1, so

LCM = (19 × 34) ÷ 1

LCM = 646 ÷ 1

LCM = 646

Finding LCM for 19 and 34 by Listing Multiples

The second method to find LCM for numbers 19 and 34 is to list out the common multiples for both nubmers and pick the first which matching:

Multiples of 19: 19, 38, 57, 76, 95, 114, 133, 152, 171, 190, 209, 228, 247, 266, 285, 304, 323, 342, 361, 380, 399, 418, 437, 456, 475, 494, 513, 532, 551, 570, 589, 608, 627, 646, 665, 684

Multiples of 34: 34, 68, 102, 136, 170, 204, 238, 272, 306, 340, 374, 408, 442, 476, 510, 544, 578, 612, 646, 680, 714

So the LCM for 19 and 34 is 646

Finding LCM for 19 and 34 by Prime Factorization

Another method to find LCM for numbers 19 and 34 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:

All Prime Factors of 19: 19 (exponent form: 191)

All Prime Factors of 34: 2, 17 (exponent form: 21, 171)

191 × 21 × 171 = 646

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See Also

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 19 and 34? (The answer is: 646). Select the first number (e.g. '19') and the second number (e.g. '34'). 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

LCM Table

Number 1Number 2LCM
43468
534170
634102
734238
834136
934306
1034
1134374
1234204
1334442
1434238
1534510
1634272
1734
1834
1934
2034340
2134
2234374
2334782
2434408
2534
2634442
2734918
2834476
2934986
3034510
31341054
3234544
33341122

FAQ

What's the Least Common Multiple (LCM) of 19 and 34?

LCM of 19 and 34 is 646