Properties of the Number -10145

Ten Thousand One Hundred Forty-Five

Basics

Value: -10146 → -10145 → -10144

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 5 × 2029

Divisors: 1, 5, 2029, 10145

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -10011110100001

Octal: -23641

Duodecimal: -5A55

Hexadecimal: -27a1

Square: 102921025

Square Root: 100.72239075796404

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

Number of inequivalent ways (mod D₄) a pair of checkers can be placed on an n X n board. A14409

a(n) = ∑_d∣n φ(d³). A68963

Base-3 Keith numbers. A188195

a(n) = r·a(ceiling(n/2))+s·a(floor(n/2)) with a(1)=1 and (r,s)=(3,2). A268526

T(n,k) is the number of length-n weak ascent sequences (prefixed with a zero) with k weak ascents, triangle read by rows. A369321

Positive numbers y such that y² is of the form x²+(x+761)² with integer x. A160200

Sum of the squares of the smaller parts of the partitions of 2n into two squarefree parts. A280320

a(0) = 1, a(n) = 23·n² + 2 for n>0. A10013

Expansion of e.g.f. arcsin(sinh(x) * exp(x)). A12519

Numbers k such that the continued fraction for sqrt(k) has period 25. A20364