primes

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What is an elegant way to find all prime numbers in a specified range in R? [duplicate]

This question already has answers here: Closed 11 years ago. Possible Duplicate: Generate a list of primes in R up to a certain number[详细]

2023-03-02 03:02 分类：问答
The most efficent way to get all divisors of a number [duplicate]

This question already has answers here: Closed 11 years ago. Possible Duplicate: Efficiently finding all divisors of a number[详细]

2023-03-01 20:42 分类：问答
haskell, counting how many prime numbers are there in a list

i m a newbie to haskell, currently i needa function \'f\' which, given two integers, returns the number of prime numbers in between them (i.e., greater than the first integer but smaller than the seco[详细]

2023-02-24 03:42 分类：问答
Why is this algorithm worse?

In Wikipedia this is one of the given algorithms to generate prime numbers: def eratosthenes_sieve(n):[详细]

2023-02-20 04:16 分类：问答
generation of safe primes

I need to generate a safe prime which has the form 2p + 1 where p is also prime of a certain bit length (lets say 1024 bits). It is to be used in a DH key exch开发者_StackOverflowange.[详细]

2023-02-18 08:53 分类：问答
Five Digit Primes in a 5x5 Grid

|---|---|---|---|---| 1 | 1 | 3 | 5 | 1 | |---|---|---|---|---| 3 | 3 | 2 | 0 | 3 | |---|---|---|---|---|[详细]

2023-02-18 05:39 分类：问答
Return all prime numbers smaller than M

Given an integer M. return all pr开发者_高级运维ime numbers smaller than M. Give a algorithm as good as you can. Need to consider time and space complexity.The Sieve of Eratosthenes is a good place t[详细]

2023-02-17 19:04 分类：问答
How to write a program that shows if a number is prime and can display the prime numbers from 1 to 100 in a file

I am trying to write a program that will tell you if the numbered entered is prime or not and will write all the prime numbers from 1 to 100 to a file and displays the numbers. This is what I have so[详细]

2023-02-16 12:16 分类：问答
Python prime number code running slow

I am trying to solve the problem mentioned here: https://www.spoj.pl/problems/PRIME1/ I am also giving the description below.[详细]

2023-02-15 14:32 分类：问答
Why setting HashTable's length to a Prime Number is a good practice?

I was going through Eric Lippert\'s latest Blog post for Guidelines and rules for GetHashCode when i hit this para:[详细]

2023-02-14 14:18 分类：问答