Properties of the Number 68153

Sixty-Eight Thousand One Hundred Fifty-Three

Basics

Value: 68152 → 68153 → 68154

Parity: odd

Prime: No

Previous Prime: 68147

Next Prime: 68161

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 17 × 19 × 211

Divisors: 1, 17, 19, 211, 323, 3587, 4009, 68153

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000101000111001

Octal: 205071

Duodecimal: 33535

Hexadecimal: 10a39

Square: 4644831409

Square Root: 261.061295484413

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

This table (read by rows) shows the coefficients of sum formulas of n-th subfactorial numbers (A000166). The n-th row (n>=1) contains T(i,n) for i=1 to n, where T(i,n) satisfies Subf(n) = ∑_i=1..n T(i,n) * n^n-i. A101559

Numbers n=2·k-1 where ∑_j=1..k (-1)^j+1 * d(2·j-1) achieves a new record, with d(n) = number of divisors of n (A000005). A318737

a(n) = sum of all divisors of all numbers k such that n² <= k < (n+1)². A168012

Continued fraction for γ(1/4). A68153

Diagonal of the rational function 1/(1 - x - y - x y - x z - y z + x y z). A274667