Properties of the Number 21313

Twenty-One Thousand Three Hundred Thirteen

Basics

Value: 21312 → 21313 → 21314

Parity: odd

Prime: Yes

Previous Prime: 21283

Next Prime: 21317

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 21313

Divisors: 1, 21313

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101001101000001

Octal: 51501

Duodecimal: 10401

Hexadecimal: 5341

Square: 454243969

Square Root: 145.98972566588375

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Primes followed by a [4,2,4] prime difference pattern of A001223. A52378

Expansion of ∏_k>=2 1/(1 - x^k)^ω(k), where ω(k) is the number of distinct primes dividing k (A001221). A293548

Primes p whose period of reciprocal equals (p-1)/9. A56214

Class 6+ primes. A81634

Primes at which the difference pattern X424Y (X and Y >= 6) occurs in A001223. A52166

Array read by antidiagonals: T(m,n) = number of minimal dominating sets in the grid graph P_m X P_n. A286847

Centered 32-gonal numbers. A195315

Prime time primes (of the form HMMSS with primes H < 24 and MM, SS < 60) such that the corresponding number of seconds after midnight is also prime. A295000

Numbers of the form HMMSS with primes H < 24 and MM, SS < 60, for which the number of seconds after midnight, 3600·H+60·MM+SS, is also prime. A295011

Prime time primes on 6-digit clocks, second definition: primes of the form HMMSS where H, MM, SS are primes, H < 24, MM and SS < 60. A295013