--- title: "Meaning & Key Takeaway of: 1 is not prime, by definition. 2 is an…" description: "\"1 is not prime, by definition. 2 is an unnatural prime, 4 is an unnatural prime, and 6 is an unnatural prime. All other natural primes cannot be unnatu..." image: "https://sms4smile.com/quotes/i/57d/aristotle-78_definitions_1-is-not-prime-by-definition-2-is-an-unn_798588.png" --- # 1 is not prime, by definition. 2 is an unnatural prime, 4… ![“1 is not prime, by definition. 2 is an unnatural prime, 4 is an unnatural prime, and 6 is an unnatural prime. All other natural primes cannot be unnatural primes.” quote by Aristotle](https://sms4smile.com/quotes/i/57d/aristotle-78_definitions_1-is-not-prime-by-definition-2-is-an-unn_798588.png) [Download](https://sms4smile.com/quotes/i/57d/aristotle-78_definitions_1-is-not-prime-by-definition-2-is-an-unn_798588.png) [Open image](https://sms4smile.com/quotes/i/57d/aristotle-78_definitions_1-is-not-prime-by-definition-2-is-an-unn_798588.png) > “1 is not prime, by definition. 2 is an unnatural prime, 4 is an unnatural prime, and 6 is an unnatural prime. All other natural primes cannot be unnatural primes.” [Aristotle](https://sms4smile.com/quotes/author/aristotle/) ## About This Quote This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation. Defines “unnatural prime” as a non‑standard classification, noting that only 2,4,6 fit, while other primes do not. **In simple terms:** Only 2,4,6 are “unnatural primes.” Key Takeaway Note the special classification. Themes mathematics classification number theory Mood analytical neutral Type educational technical When to use this quote - teaching - research - problem solving Key Concepts prime classification definition logic Questions to Reflect On - How useful are such ad‑hoc categories? - Can this classification aid in proofs? A Different Perspective The term is non‑standard and may cause confusion. ★ ★ ★ ★ ★ No ratings yet [Mathematics](https://sms4smile.com/quotes/about/mathematics/) ## Related quotes > [Money was intended to be used in exchange, but not to increase at interest. 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