105, 111, 115, 117, 119, 121, 123, 125, 129, 133, 135, 141, 143, 145, 147, 153,
155, 159, 161, 165, 169, 171, 175, 177, 183, 185, 187, 189, 195, 201, 203, 205,
207, 209, 213, 215, 217, 219, 221, 225, 231, 235, 237, 243, 245, 247, 249, 253,
255, 259, 261, 265, 267, 273, 275, 279, 285, 287, 289, 291, 295, 297, 299, 301,
303, 305, 309, 315, 319, 321, 323, 325, 327, 329, 333, 335, 339, 341, 343, 345,
351, 355, 357, 361, 363, 365, 369, 371, 375, 377, 381, 385, 387, 391, 393, 395,
399, 403, 405, 407, 411, 413, 415, 417, 423, 425, 427, 429, 435, 437, 441, 445,
447, 451, 453, 455, 459, 465, 469, 471, 473, 475, 477, 481, 483, 485, 489, 493,
495, 497, 501, 505, 507, 511, 513, 515, 517, 519, 525, 527, 529, 531, 533, 535,
537, 539, 543, 545, 549, 551, 553, 555, 559, 561, 565, 567, 573, 575, 579, 581,
583, 585, 589, 591, 595, 597, 603, 605, 609, 611, 615, 621, 623, 625, 627, 629,
633, 635, 637, 639, 645, 649, 651, 655, 657, 663, 665, 667, 669, 671, 675, 679,
681, 685, 687, 689, 693, 695, 697, 699, 703, 705, 707, 711, 713, 715, 717, 721,
723, 725, 729, 731, 735, 737, 741, 745, 747, 749, 753, 755, 759, 763, 765, 767,
771, 775, 777, 779, 781, 783, 785, 789, 791, 793, 795, 799, 801, 803, 805, 807,
813, 815, 817, 819, 825, 831, 833, 835, 837, 841, 843, 845, 847, 849, 851, 855,
861, 865, 867, 869, 871, 873, 875, 879, 885, 889, 891, 893, 895, 897, 899, 901,
903, 905, 909, 913, 915, 917, 921, 923, 925, 927, 931, 933, 935, 939, 943, 945,
949, 951, 955, 957, 959, 961, 963, 965, 969, 973, 975, 979, 981, 985, 987, 989,
993, 995, 999.
Having wasted my time compiling this list of 307 odd 3 digit composites, I would be interested to know what, if anything, you will do with this information.
No. All prime numbers except for the number 2 are odd. However, most odd numbers are composite numbers. All even numbers greater than 2 are composite numbers. So, prime numbers do not need to be odd, since one prime number is even. Also, composite numbers do not need to be even.Here are some composite odd numbers:9 = 3 x 333 = 3 x 1175 = 5 x 15
Work back from 999:999 is odd ... no.998 is even and divisible by 2, so it is composite. (All even numbers are composite!)Further Information:-All even numbers are composite except for 2 which is a prime number.
Any product of two or more odd numbers that are larger than 1. For example, 33 = 3*11 is odd and composite.
450
450
No. All prime numbers except for the number 2 are odd. However, most odd numbers are composite numbers. All even numbers greater than 2 are composite numbers. So, prime numbers do not need to be odd, since one prime number is even. Also, composite numbers do not need to be even.Here are some composite odd numbers:9 = 3 x 333 = 3 x 1175 = 5 x 15
999 What is even odd? 3 digit odd numbers 101,103,105...999 so count them = 450 3 digit even numbers 100,102,104...998 so count them = 450
111 and 201
Work back from 999:999 is odd ... no.998 is even and divisible by 2, so it is composite. (All even numbers are composite!)Further Information:-All even numbers are composite except for 2 which is a prime number.
Any product of two or more odd numbers that are larger than 1. For example, 33 = 3*11 is odd and composite.
450
450
450 whole numbers.
The smallest number that is both odd and composite is 9, which is divisible by 3. The odd numbers are 1, 3, 5, 7, 9, 11, ..., and 1, 3, 5, and 7 are all prime. It is 9 that is the smallest odd composite number.
The ratio of the number of one-digit prime numbers to the number of one-digit composite numbers is one to one. The one-digit prime numbers are 2, 3, 5, and 7. The one-digit composite numbers are 4, 6, 8, and 9. Therefor, the ratio is 4:4, which simplifies to 1:1.
There are infinitely many odd numbers that are prime. Take any set of odd numbers greater than 1. Their product will be odd and, by definition, it will be composite. For example, 3*5*13 = 195.
100, 102, 104