What are co-prime numbers
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Yogita Ingle 6 years, 2 months ago
When two numbers (they may not be prime) do not have any common factor other than one between them they are called co-prime or relatively prime.
It is obvious that two prime numbers are always co-prime. For example, <mathjax>17</mathjax> and <mathjax>23</mathjax>.
However, even two composite numbers can also be co-prime or relatively prime. For example <mathjax>16</mathjax> and <mathjax>25</mathjax> do not have any common factor other than one. Similarly <mathjax>84</mathjax> and <mathjax>65</mathjax> do not have any common factor and are hence co-prime.
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