質數

質數就像生活，它們是完全符合邏輯的，但即使我們花所有時間來思考，也找不到規律。

zhíshù jiù xiàng shēnghuó tāmen shì wánquán fúhé luóji de dàn jíshǐ wǒmen huā suǒyǒu shíjiān lái sīkǎo yě zhǎobúdào guīlǜ

Prime numbers are like life; they are completely logical, but impossible to find the rules for, even if you spend all your time thinking about it.