Check the properties of a positive integer to enter the number in the search box. If you input two numbers separated by a space, the properties of the pair like GCD are shown. If you separate two numbers by a comma, the sequences containing those numbers are listed.
13 = 13
| Factor | Count |
|---|---|
| 13 | 1 |
3.60555127546398912485869914235082...
2.35133468772075726604953160858713...
0.0769230769230769
1101
4
15
d
| Prime number | No |
| Hexagonal number | No |
| Perfect number | No |
| Deficient number | No |
| Abundant number | No |
| Mersenne number | No |
| Harshad number | No |
| Harmonic divisor number | No |
QR13 (sequence)
-1
Properties of the number 13: 13 has 2 divisors. The divisors of 13 are 1, 13 and the sum of them is 14. The factorization of 13 is 13. The square and cube of 13 are 169 and 2197 respectively. The square root and cube root of 13 are 3.60555127546398912485869914235082... and 2.35133468772075726604953160858713.... The binary, octal, hexadecimal of 13 are 1101, 15, d. 13 is not a prime number, not hexagonal number, not perfect number, not deficient number, not Mersenne number, not Mersenne number, not Harshad number, not harmonic divisor number.
0.42016703682664091612508627804345...
0.90744678145019619375233332903008...
0.46302113293648961001025554651278...
0.22495105434386500342647252637107...
0.97437006478523524588553073044750...
0.23086819112556311583972501466633...
2.56494935746153673861158495128620...
1.11394335230683672044449394888943...
3.70043971814109218243515897484031...