價格：免費
更新日期：2017-11-13
檔案大小：1.7 MB
目前版本：1.3.2
版本需求：需要 iOS 8.0 或以上版本。與 iPhone、iPad 及 iPod touch 相容。
支援語言：丹麥文, 俄文, 加泰羅尼亞文, 匈牙利文, 印尼文, 土耳其文, 巴克摩文挪威文, 希伯來文, 希臘文, 德語, 捷克文, 斯洛伐克文, 日語, 法文, 波蘭文, 烏克蘭文, 瑞典文, 簡體中文, 繁體中文, 羅馬尼亞文, 義大利文, 芬蘭文, 英語, 荷蘭文, 葡萄牙文, 西班牙文, 越南文, 阿拉伯文, 韓語, 克羅埃西亞文, 泰文, 馬來文, 冰島文
Primes, Prime Factors
About
This app lets you
• check numbers to see if they are prime numbers,
• find next prime,
• find primes within an interval (range), and
• determining prime factors.
The input numbers need be between 0 and 9,223,372,036,854,775,807, which is 2^63-1, or approximately 9.223·10^18. Just keep numbers less than 19 digits; a validation mechanism prevents illegal input.
Primes
A prime number (or a prime) is a natural number greater than 1 that has no positive divisors other than 1 and itself. Examples: 2, 3, 5, 7, 11, 13, 17. 2 is the only even prime.
When finding primes in an interval, duration is shown, so the app may be used for benchmarking as well.
Prime factor
A natural number greater than 1 that is not a prime number is called a composite number. Enter any number into the Factor field, to get its prime factors. If the number is a prime, then it has only one factor, itself.
Examples:
•Entering 6, gives 2 3.
•Entering 12, gives 2 2 3.
•Entering 100, gives 2 2 5 5.
Since very big numbers may consist of many small primes, prime factorization of large numbers may be very quick. Try it out.
Duration is shown.
Localization/Translation
I have tried to translate this app into every language imaginable, but I have used an online translation service for most of them, and as you know, words may have different meanings.
Please do not hesitate to email me, if you have any corrections to the translations, or just any tips or criticism to this app. I will read every mail — if it is written in English :)
支援平台：iPhone