Properties of the Number 21283

Twenty-One Thousand Two Hundred Eighty-Three

Basics

Value: 21282 → 21283 → 21284

Parity: odd

Prime: Yes

Previous Prime: 21277

Next Prime: 21313

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 21283

Divisors: 1, 21283

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 101001100100011

Octal: 51443

Duodecimal: 10397

Hexadecimal: 5323

Square: 452966089

Square Root: 145.8869425274243

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 p such that q-p = 30, where q is the next prime after p. A124596

Primes which are the sum of three positive 4th powers. A85318

Prime numbers that are the sum of three distinct positive fourth powers. A126657

Numbers that are the sum of eight fourth powers in nine or more ways. A345584

Numbers that are the sum of eight fourth powers in ten or more ways. A345585

Numbers that are the sum of eight fourth powers in exactly ten ways. A345842

Discriminants of imaginary quadratic fields with class number 19 (negated). A46016

Triangle read by rows: T(n,k) is the number of isomorphism classes of commutative semigroups of order n with k idempotents. A58116

Lexicographically largest increasing sequence of primes for which the continued square root map (see A257574) produces the decimal expansion of e (Euler's number). A257764

Primes p₁ where products m of k = 5 consecutive primes p₁..p_k are such that only p₁ < m^1/k. A376136