百度试题 结果1 题目What is not a prime number? A. 13 B. 17 C. 21 D. 23 相关知识点: 试题来源: 解析 C。本题考查质数的概念。21 可以分解为 3×7,所以它不是质数。13、17、23 都只能被 1 和自身整除,是质数。反馈 收藏
"Yes, 193 is a prime number." A number can be classified as prime or composite depending on the factors it contains; it could either have only 2 factors or more than 2 factors. Numbers like 193 with only 2 factors, i.e. 1 and 193 are called prime numbers. However, numbers like ...
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Neither 0 or 1 is a prime number. Nor are they composite numbers. Because prime and composite numbers are only defined for integers that are larger than 1.
Is 269 a prime number? Numbers having only 2 factors, i.e. 1 and the number itself are known as prime numbers whereas numbers with more than 2 factors are known as composite. The answer to the question whether 269 is a prime or composite is - "269 is a prime number." Now, let ...
Prime numbers are any numbers that cannot be evenly divided by any integer other than 1 and itself. Or in other words, the only numbers that you can multiply to get a prime number are 1 and the prime number. Numbers that are not prime, or those with additional factors other than 1 and...
反例：25
Prime numbers are a fascinating topic in mathematics. They are the building blocks of all positive integers and have a special status in number theory. The prime numbers are numbers that have only two factors 1 and the number itself. The numbers that have more than two factors are known as...
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utm.edu/notes/faq/WhyCalledPrimes The property of being a prime is called primality and the word prime is also used as an adjective. Since o is the only even prime number the term odd prime refers to any prime number greater than o.参考: en. *** /wiki/Prime_number ...