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
A. It has only two factors. B. It has more than two factors. C. It is divisible by all numbers. D. It is always E. ven. 相关知识点: 试题来源: 解析 A。本题考查质数的概念。如果一个数是质数,那么它只有两个因数,1 和它本身。B 选项是合数的特点;C 选项错误;D 选项质数不一定是偶数...
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The sum of two prime numbers is 85.What is the product of these two prime numbers?( )两个质数的和是85。这两个质数的乘积是多少?( ) A.85 B.91 C.115 D.133 E.166 【考点】质数与合数. 【答案】E 【解答】 【点评】 声明:本试题解析著作权属菁优网所有,未经书面同意,不得复制发布。
What are all the prime numbers between 5 and 90? What are the prime numbers between 20 and 39? What are the prime numbers between 25 and 50? What are the prime numbers between 0 and 15? What number has 7 prime factors? Is 41 a prime number?
百度试题 结果1 题目11. What is the smallest prime number greater than 200? 211 相关知识点: 试题来源: 解析 211 反馈 收藏
百度试题 结果1 题目1. What is a prime number? 相关知识点: 试题来源: 解析 A number that can only be divided by itself and I. 反馈 收藏
Prime Numbers Are Practically Everywhere! Apart from the number 1, every other integer is either a prime, or consists of prime numbers. 1 was once considered to be the smallest prime number, but currently, 1 is neither a prime nor a composite number. Let’s take a random number,...
What is a prime number in math? A prime number is a number that can only be divided by itself and 1 without remainders. What are the prime numbers from 1 to 100? The prime numbers from 1 to 100 are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, ...
26 August, 2015 in expository, math.NT | Tags: prime numbers, Roger Heath-Brown, Siegel zero, twin primes | by Terence Tao | 76 comments The twin prime conjecture is one of the oldest unsolved problems in analytic number theory. There are several reasons why this conjecture remains out ...