Properties of the Number 19903

Nineteen Thousand Nine Hundred Three

Basics

Value: 19902 → 19903 → 19904

Parity: odd

Prime: No

Previous Prime: 19891

Next Prime: 19913

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 13 × 1531

Divisors: 1, 13, 1531, 19903

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 100110110111111

Octal: 46677

Duodecimal: B627

Hexadecimal: 4dbf

Square: 396129409

Square Root: 141.07799261401476

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

Triangle T(n,k) giving number of loopless matroids of rank k on n labeled points (n >= 0, 0 <= k <= n). A58710

The array in A059219 read by antidiagonals in 'up' direction. A59220

Triangle T(n,k) giving the number of loopless matroids of rank k on n labeled points (n >= 1, 1 <= k <= n). A58711

The array in A059219 read by antidiagonals in the direction in which it was constructed. A59235

Decimal part of cube root of a(n) starts with 1: first term of runs. A34127

Starting positions of strings of three 7's in the decimal expansion of π. A83631

Logarithmic derivative of A005169, the number of fountains of n coins. A227620

Expansion of e.g.f. exp(-x * (1 - x)²) / (1 - x)³. A375427

"BHJ" (reversible, identity, labeled) transform of 0,1,1,1... A32075

Sum of the areas of all r X s rectangles such that r + s = 2n, with r, s composite. A334229