Properties of the Number 21433

Twenty-One Thousand Four Hundred Thirty-Three

Basics

Value: 21432 → 21433 → 21434

Parity: odd

Prime: Yes

Previous Prime: 21419

Next Prime: 21467

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 21433

Divisors: 1, 21433

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101001110111001

Octal: 51671

Duodecimal: 104A1

Hexadecimal: 53b9

Square: 459373489

Square Root: 146.40013661195812

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

a(n) = 25·n² - 36·n + 13. A154355

Primes whose decimal representation is a valid number in base 5 and interpreted as such is again a prime. A90708

Primes p such that q-p = 34, where q is the next prime after p. A134116

Expansion of ∏_{1 <= i <= j <= k} (1 + x^i·j*k). A321359

Hypotenuses of primitive Pythagorean triples in A195680 and A195681. A195682

G.f.: ∑_n>=0 (1+x)ⁿ * ∏_k=1..n ((1+x)^k - 1). A207556

Lexicographically largest increasing sequence of primes for which the continued square root map (see A257574) produces π. A257582

Fifth term of weak prime sextet: p(m-3)-p(m-4) < p(m-2)-p(m-3) < p(m-1)-p(m-2) < p(m)-p(m-1) < p(m+1)-p(m). A54832

Triangle read by rows: T(n,k) is the number of odd permutations of {1,2,...,n} with no fixed points and having k excedances (n>=1; k>=1). A145880

Primes p such that continued fraction of (1+sqrt(p))/2 has period 5 : primes in A146330. A146350