sense. The natural numbers form a set, commonly symbolized as a bold N or blackboard bold ⁠ N {\displaystyle \mathbb {N} } ⁠. Many other number sets are...

A prime number (or a prime) is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that...

(forty-two) is the natural number that follows 41 and precedes 43. Forty-two (42) is the sixth pronic number and the eighth abundant number, with an abundance...

number, numeral and digit. It is the natural number following 3 and preceding 5. It is a square number, the smallest semiprime and composite number,...

A number is a mathematical object used to count, measure, and label. The most basic examples are the natural numbers 1, 2, 3, 4, and so forth. Numbers...

6 (six) is the natural number following 5 and preceding 7. It is a composite number and the smallest perfect number. A six-sided polygon is a hexagon,...

3 (three) is a number, numeral and digit. It is the natural number following 2 and preceding 4, and is the smallest odd prime number and the only prime...

1729 is the natural number following 1728 and preceding 1730. It is the first nontrivial taxicab number, expressed as the sum of two cubic numbers in...

The atomic number or nuclear charge number (symbol Z) of a chemical element is the charge number of an atomic nucleus. For ordinary nuclei composed of...

(five) is a number, numeral and digit. It is the natural number, and cardinal number, following 4 and preceding 6, and is a prime number. Humans, and...