I feel weird posting this link, because I was relatively old when Wikipedia became a thing and still remember what "real" encyclopedias were like. https://www.

I feel weird posting this link, because I was relatively old when Wikipedia became a thing and still remember what "real" encyclopedias were like. https://www.britannica.com/topic/algebra/Applications-of-group-theory#ref762813 https://www.britannica.com/topic/algebra/Applications-of-gro... > Some other fundamental concepts of modern algebra also had their origin in 19th-century work on number theory, particularly in connection with attempts to generalize the theorem of (unique) prime factorization beyond the natural numbers. This theorem asserted that every natural number could be written as a product of its prime factors in a unique way, except perhaps for order (e.g., 24 = 2∙2∙2∙3). That seems like a pretty good first step to me.