Visual Factor Pairs

Prime Numbers- can only be divided by themselves and 1.
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, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239
Semiprime Numbers -exactly two prime factors.
4 (2 × 2)[br]6 (2 × 3)[br]9 (3 × 3)[br]10 (2 × 5)[br]14 (2 × 7)[br]15 (3 × 5)[br]21 (3 × 7)[br]22 (2 × 11)[br]25 (5 × 5)[br]26 (2 × 13)[br]33 (3 × 11)[br]34 (2 × 17)[br]35 (5 × 7)[br]49 (7 × 7)[br]...
Triprime Numbers -exactly three prime factors.
8 (2, 2, 2)[br]12 (2, 2, 3)[br]27 (3, 3, 3)[br]30 (2, 3, 5)[br]42 (2, 3, 7)[br]66 (2, 3, 11)[br]70 (2, 5, 7)[br]78 (2, 3, 13)[br]102 (2, 3, 17)[br]110 (2, 5, 11)[br]114 (2, 3, 19)[br]138 (2, 3, 23)[br]154 (2, 7, 11)[br]...

Information: Visual Factor Pairs