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...

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,...

(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...

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...

(two) is a number, numeral and digit. It is the natural number following 1 and preceding 3. It is the smallest and the only even prime number. Because it...

6 (six) is the natural number following 5 and preceding 7. It is a composite number and the smallest perfect number. Six is the smallest positive integer...

An integer is the number zero (0), a positive natural number (1, 2, 3, . . .), or the negation of a positive natural number (−1, −2, −3, . . .). The negations...

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...

8 (eight) is the natural number following 7 and preceding 9. English eight, from Old English eahta, æhta, Proto-Germanic *ahto is a direct continuation...

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...

(one, unit, unity) is a number, numeral, and glyph. 1 is the first and smallest positive integer of the infinite sequence of natural numbers. This fundamental...

666 (six hundred [and] sixty-six) is the natural number following 665 and preceding 667. In Christianity, 666 is referred to in (most manuscripts of) chapter...

the natural number following 599 and preceding 601. Six hundred is a composite number, an abundant number, a pronic number and a Harshad number. In the...

(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...

700 (seven hundred) is the natural number following 699 and preceding 701. It is the sum of four consecutive primes (167 + 173 + 179 + 181), the perimeter...

The number e is a mathematical constant approximately equal to 2.71828 that can be characterized in many ways. It is the base of the natural logarithm...

7 (seven) is the natural number following 6 and preceding 8. It is the only prime number preceding a cube. As an early prime number in the series of positive...

is the natural number following 799 and preceding 801. It is the sum of four consecutive primes (193 + 197 + 199 + 211). It is a Harshad number, an Achilles...

900 (nine hundred) is the natural number following 899 and preceding 901. It is the square of 30 and the sum of Euler's totient function for the first...

10 (ten) is the even natural number following 9 and preceding 11. Ten is the base of the decimal numeral system, the most common system of denoting numbers...

LXIX) is the natural number following 68 and preceding 70. An odd number and a composite number, 69 is divisible by 1, 3, 23 and 69. The number and its pictograph...

natural number following 29 and preceding 31. 30 is an even, composite, pronic number. With 2, 3, and 5 as its prime factors, it is a regular number and...

143 (one hundred [and] forty-three) is the natural number following 142 and preceding 144. It is one less than a gross. 143 is: the sum of seven consecutive...

XX) is the natural number following 19 and preceding 21. A group of twenty units may be referred to as a score. Twenty is a pronic number, as it is the...

(eighty-eight) is the natural number following 87 and preceding 89. 88 is: a refactorable number. a primitive semiperfect number. an untouchable number. a hexadecagonal...

55 (fifty-five) is the natural number following 54 and preceding 56. 55 is the tenth Fibonacci number. The atomic number of caesium. Messier object M55...

0 and 1 are commonly identified with the natural numbers 0 and 1. This allows identifying any natural number n with the sum of n real numbers equal to...

52 (fifty-two) is the natural number following 51 and preceding 53. Fifty-two is a composite number; a square-prime, of the form (p2, q) where q is a...

hundred [and] eighty-six) is the natural number following 785 and preceding 787. 786 is: a sphenic number. a harshad number in bases 4, 5, 7, 14 and 16. the...