Properties of the Number -12161

Twelve Thousand One Hundred Sixty-One

Basics

Value: -12162 → -12161 → -12160

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 12161

Divisors: 1, 12161

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -10111110000001

Octal: -27601

Duodecimal: -7055

Hexadecimal: -2f81

Square: 147889921

Square Root: 110.27692415006868

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

Proth primes: primes of the form k·2^m + 1 with odd k < 2^m, m >= 1. A80076

T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 3 neighboring 1s. A297544

Primes with digital product = 12. A107697

T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 0 0 vertically. A207960

Numbers k such that Fibonacci(prime(k)) is prime. A119984

Mother primes of order 9. A136068

T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 0 1 0 vertically. A208164

Primes of the form 128·k + 1. A208177

Lesser of twin primes whose average is 6 times a prime. A60213

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having one, three or four distinct clockwise edge differences. A209960