LCM for 7 and 19

What's the Least Common Multiple (LCM) of 7 and 19?

Answer: LCM of 7 and 19 is 133

(One hundred thirty-three)

Finding LCM for 7 and 19 using GCF's of these numbers

The first method to find LCM for numbers 7 and 19 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 7 and 19 is 1, so

LCM = (7 × 19) ÷ 1

LCM = 133 ÷ 1

LCM = 133

Finding LCM for 7 and 19 by Listing Multiples

The second method to find LCM for numbers 7 and 19 is to list out the common multiples for both nubmers and pick the first which matching:

Multiples of 7: 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98, 105, 112, 119, 126, 133, 140, 147

Multiples of 19: 19, 38, 57, 76, 95, 114, 133, 152, 171

So the LCM for 7 and 19 is 133

Finding LCM for 7 and 19 by Prime Factorization

Another method to find LCM for numbers 7 and 19 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:

All Prime Factors of 7: 7 (exponent form: 71)

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

71 × 191 = 133

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 7 and 19? (The answer is: 133). Select the first number (e.g. '7') and the second number (e.g. '19'). 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
11919
21938
31957
419
51995
619114
719
819152
919
1019190
1119209
1219
1319247
1419
1519
1619
1719
1819342
191919
2019380
2119399
2219418
2319437
2419456
2519475
2619494
2719513
2819532
2919551
3019570

FAQ

What's the Least Common Multiple (LCM) of 7 and 19?

LCM of 7 and 19 is 133