Properties of the Number -105211

One Hundred Five Thousand Two Hundred Eleven

Basics

Value: -105212 → -105211 → -105210

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 105211

Divisors: 1, 105211

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11001101011111011

Octal: -315373

Duodecimal: -50A77

Hexadecimal: -19afb

Square: 11069354521

Square Root: 324.3624515877262

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 of the form 2·n² + 34·n + 15. A217494

Primes p such that A001177(p) = (p-1)/9. A308802

Primes formed by concatenating k and 2k+1. A309808

Starts of runs of at least 3 consecutive odd numbers whose prime factors are all prime-indexed primes. A357168

a(0) = 2; afterwards a(n) is the least prime greater than a(n-1) such that ω(a(n-1) + a(n)) = n. A357713

Upper ends of record gaps between prime-indexed primes. A280081

Emirps p such that p == 1 (mod s) and R(p) == 1 (mod s), where R(p) is the digit reversal of p and s the sum of digits of p. A356947

Primes which remain prime after reflection across a vertical line through the middle of the number (numbers are written as digital clock style numerals). A178318

a(0) = 1; a(n) = ∑_k=1..n (-1)^{n - k} * binomial(n,k) * a(k-1) * a(n-k). A331404

Let P(k) = floor(k/2). Start with n, apply P repeatedly until reach 1. a(n) = concatenation of numbers obtained. A83177