1至100：
1既不是質(zhì)數(shù)也不是合數(shù)
素?cái)?shù)（也就是質(zhì)數(shù)）（只能被1和它本身整除）：2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97（以上數(shù)各自的約數(shù)都只有1和它本身）【共25個】
合數(shù)：（有除了1和它本身以外的非0約數(shù),也就是能被1和它本身之外的其它某一個非0自然數(shù)整除）4,6,8,9,10,12,14,15,16,18,20,21,22,24,25,26,27,28,30,32,33,34,35,36,38,39,40,42,44,45,46,48,50,51,52,54,55,56,57,58,60,62,63,64,65,66,68,69,70,71,72,74,75,76,77,78,80,81,82,84,85,86,88,90,92,93,94,95,96,98,99,100【共74個】
奇數(shù)：（單數(shù)）1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39,41,43,45,47,49,51,53,55,57,59,61,63,65,67,69,71,73,75,77,79,81,83,85,87,89,91,93,95,97,99【共50個】
偶數(shù)：（雙數(shù),能被2整除的數(shù),其實(shí)0也是偶數(shù),只不過你要求1至100,0不在其區(qū)間內(nèi)）2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92,94,96,98,100【共50個】