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Home >> Numbers >> Coprime Numbers >>

Coprime Numbers

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Definition
Two numbers are said to be Coprimes when they have only 1 as a common factor.

Following examples would further help you to understand Coprimes

Example 1 = Are numbers 6 and 25 Coprime ?
Answer = Two given numbers are 6 and 25
Factors of 6 = 1, 2, 3, 6
Factors of 25 = 1, 5, 25
On comparing the factors of numbers 6 and 25, you can see that both have only 1 as a common factor,
Hence we can say that numbers 6 and 25 are Coprimes.


Example 2 = Are numbers 12 and 21 Coprime ?
Answer = Two given numbers are 12 and 21
Factors of 12 = 1, 2, 3, 4, 6, 12
Factors of 21 = 1, 3, 7, 21
On comparing the factors of numbers 12 and 21, you can see that both have 1 and 3 as common factors,
Hence, we can say that numbers 12 and 21 are not Coprimes.


Example 3 = Are numbers 27 and 16 Coprime ?
Answer = Two given numbers are 27 and 16
Factors of 27 = 1, 3, 9, 27
Factors of 16 = 1, 2, 4, 16
On comparing the factors of numbers 27 and 16, you can see that both have 1 as a common factor,
Hence we can say that numbers 27 and 16 are Coprimes.



Study More Solved Questions / Examples

  • Find Whether the following numbers are coprime numbers

    A) 7 and 16
    B) 21 and 10
    C) 25 and 35
    D) 81 and 13
    E) 40 and 50
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