LCM for 17 and 85

What's the Least Common Multiple (LCM) of 17 and 85?

Answer: LCM of 17 and 85 is 85

(Eighty-five)

Finding LCM for 17 and 85 using GCF's of these numbers

The first method to find LCM for numbers 17 and 85 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 17 and 85 is 17, so

LCM = (17 × 85) ÷ 17

LCM = 1445 ÷ 17

LCM = 85

Finding LCM for 17 and 85 by Listing Multiples

The second method to find LCM for numbers 17 and 85 is to list out the common multiples for both nubmers and pick the first which matching:

Multiples of 17: 17, 34, 51, 68, 85, 102, 119

Multiples of 85: 85, 170, 255, 340, 425, 510, 595, [...], 85

So the LCM for 17 and 85 is 85

Finding LCM for 17 and 85 by Prime Factorization

Another method to find LCM for numbers 17 and 85 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:

All Prime Factors of 17: 17 (exponent form: 171)

All Prime Factors of 85: 5, 17 (exponent form: 51, 171)

171 × 51 = 85

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 17 and 85? (The answer is: 85). Select the first number (e.g. '17') and the second number (e.g. '85'). 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
285170
385255
485340
58585
685510
785595
885680
985765
1085170
1185935
12851020
13851105
14851190
1585
16851360
1785
18851530
19851615
2085340
21851785
22851870
23851955
24852040
2585425
26852210
27852295
28852380
29852465
3085510
31852635

FAQ

What's the Least Common Multiple (LCM) of 17 and 85?

LCM of 17 and 85 is 85