Properties of the Number 13145

Thirteen Thousand One Hundred Forty-Five

Basics

Value: 13144 → 13145 → 13146

Parity: odd

Prime: No

Previous Prime: 13127

Next Prime: 13147

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 5 × 11 × 239

Divisors: 1, 5, 11, 55, 239, 1195, 2629, 13145

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11001101011001

Octal: 31531

Duodecimal: 7735

Hexadecimal: 3359

Square: 172791025

Square Root: 114.65164630305141

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 integer partitions of n whose product is divisible by the sum of primes of their parts. A330954

Pseudo-random numbers: a (very weak) pseudo-random number generator from the second edition of the C book. A61364

Generalized Stirling number triangle of first kind read by rows: T(n, k) = [x^k] ∏_m=1..n (x - m - r), with r = 8. A51380

Index sequence to A089840: positions of bijections that preserve A127302 (the non-oriented form of binary trees) and whose behavior does not depend on whether there are internal or terminal nodes (leaves) in the neighborhood of any vertex. A153830

Triangle read by rows: T(n,k) is the number of Motzkin paths of length n and height k (n>=0, k>=0). A97862

Number of asymmetric orthoplex n-ominoes in n-2 space. A36369

Numbers k such that 7·10^k + 9 is prime. A97954

Absolute value of coefficient of x³ in polynomial whose zeros are 5 consecutive integers starting with the n-th integer. A127694

Numbers m such that product of factorials of digits of m equals σ(m). A137603

Setwise difference A340150 \ A340076. A340151