恶有鳄抱 发表于 2023-7-24 14:48:52

筛出这个素数，你用了多久？



{:10_255:}

不二如是 发表于 2023-7-24 15:27:31

0.002秒，课程：

https://www.bilibili.com/video/BV1Rj411Q7Ar

Ewan-Ahiouy 发表于 2023-7-24 14:50:04

这......

恶有鳄抱 发表于 2023-7-24 14:55:09

Ewan-Ahiouy 发表于 2023-7-24 14:50
这......

{:10_262:}{:10_262:}

歌者文明清理员 发表于 2023-7-24 14:55:25

6666666666666666666

学习编程中的Ben 发表于 2023-7-24 14:56:46

这是个素数？

Ewan-Ahiouy 发表于 2023-7-24 14:59:58

不到0.1秒就知道他不是素数{:5_97:}

zhangjinxuan 发表于 2023-7-24 15:00:46

Is really a prime. {:10_257:}

https://zh.numberempire.com/

zhangjinxuan 发表于 2023-7-24 15:14:19

https://zh.numberempire.com/primenumbers.php?number=99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999989999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999&action=check&_p1=2340

不瞒你说，他还真的是个质数{:10_257:}

@Ewan-Ahiouy

歌者文明清理员 发表于 2023-7-24 15:14:25

zhangjinxuan 发表于 2023-7-24 15:00
Is really a prime.

https://zh.numberempire.com/

这有几个9啊

zhangjinxuan 发表于 2023-7-24 15:14:54

歌者文明清理员 发表于 2023-7-24 15:14
这有几个9啊

99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999989999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999

歌者文明清理员 发表于 2023-7-24 15:16:36

zhangjinxuan 发表于 2023-7-24 15:14
999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999 ...

琅琊王朝 发表于 2023-7-24 15:17:51

wow

Ewan-Ahiouy 发表于 2023-7-24 15:19:33

zhangjinxuan 发表于 2023-7-24 15:14
https://zh.numberempire.com/primenumbers.php?number=999999999999999999999999999999999999999999999999 ...

woc{:10_257:}

zhangjinxuan 发表于 2023-7-24 15:20:16

歌者文明清理员 发表于 2023-7-24 15:16


{:10_277:}

陶远航 发表于 2023-7-24 15:26:09

zhangjinxuan 发表于 2023-7-24 15:14
https://zh.numberempire.com/primenumbers.php?number=999999999999999999999999999999999999999999999999 ...

3*33333333.....

zhangjinxuan 发表于 2023-7-24 17:13:25

不二如是 发表于 2023-7-24 15:27
0.002秒，课程：

你家电脑好厉害{:10_302:}

zhangjinxuan 发表于 2023-7-24 17:14:00

陶远航 发表于 2023-7-24 15:26
3*33333333.....

还有个 8 ，你忽略了{:10_256:}

陶远航 发表于 2023-7-24 17:14:37

zhangjinxuan 发表于 2023-7-24 17:14
还有个 8 ，你忽略了

看见了{:10_256:}

小甲鱼 发表于 2023-7-24 18:03:04

不二如是 发表于 2023-7-24 15:27
0.002秒，课程：

第 10001 个质数才 104743，它这个光是位数就有 506 位了：

99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999989999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
单是判断这个数是否质数就要耗费海量时间，更别说要把它给筛出来了。

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