a mathematical sense. The natural numbers form a set, often symbolized as N {\textstyle \mathbb {N} } . Many other number sets are built by successively...

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,...

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...

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 only even prime number. Because it...

of the infinite sequence of natural numbers, followed by 2, although by other definitions 1 is the second natural number, following 0. The fundamental...

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...

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...

(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...

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 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...

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...

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...

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...

69 (sixty-nine; 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. 69...

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...

400 (four hundred) is the natural number following 399 and preceding 401. 400 is the square of 20. 400 is the sum of the powers of 7 from 0 to 3, thus...

dictionary. 2000 (two thousand) is a natural number following 1999 and preceding 2001. It is: the highest number expressible using only two unmodified...

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...

50 (fifty) is the natural number following 49 and preceding 51. Fifty is the smallest number that is the sum of two non-zero square numbers in two distinct...

1701 is the natural number preceding 1702 and following 1700. 1701 is an odd number and a Stirling number of the second kind. The number 1701 also has...

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...

37 (thirty-seven) is the natural number following 36 and preceding 38. 37 is the 12th prime number, and the 3rd isolated prime without a twin prime. 37...

300 (three hundred) is the natural number following 299 and preceding 301. The number 300 is a triangular number and the sum of a pair of twin primes...

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...

the natural number following 142 and preceding 144. 143 is: the sum of seven consecutive primes (11 + 13 + 17 + 19 + 23 + 29 + 31). But this number is...

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...

(five hundred) is the natural number following 499 and preceding 501. 500 = 22 × 53. It is an Achilles number and an Harshad number, meaning it is divisible...