Contact us
Choose a category below so we can get back to you as quickly as possible.
質數:又稱素數.指在一個大於1的自然數中,除了1和此整數自身外,沒法被其他自然數整除的數.換句話說,只有兩個正因數(1和自己)的自然數即為素數.比1大但不是素數的數稱為合數.1和0既非素數也非合數. 合數:指自然數中除能被1和本數整除外,還能被其他的數整除的數. 奇數:整數中,能被2整除的數是偶數,不能被2整除的數是奇數,偶數可用2k表示,奇數可用2k+1表示,這裡k是整數.奇數包括正奇數、負奇數.
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.