Properties of the Number 13047

Thirteen Thousand Forty-Seven

Basics

Value: 13046 → 13047 → 13048

Parity: odd

Prime: No

Previous Prime: 13043

Next Prime: 13049

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 4349

Divisors: 1, 3, 4349, 13047

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 11001011110111

Octal: 31367

Duodecimal: 7673

Hexadecimal: 32f7

Square: 170224209

Square Root: 114.22346518995123

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

Crystal ball sequence for hexagonal close-packing. A7202

Let y=f(x) satisfy F(x,y)=0. a(n) is the number of terms in the expansion of (d/dx)ⁿ y in terms of the partial derivatives of F. A3262

Number of subsets of {1,...,n} having mean=median. A212146

This sequence and A139143 are complements. a(1) = 1, A139143(1) = 2, a(n+1) = a(n) + ∑_{k = 1..n} A139143(k). A139142

Indices of primes in sequence defined by A(0) = 29, A(n) = 10·A(n-1) - 41 for n > 0. A101960

Values of m such that A139361(n)=4m+1. A139362

Number of 3 X 3 0..n symmetric arrays with all rows summing to floor(n·3/2). A213801

Number of partitions satisfying cn(1,5) + cn(4,5) <= cn(2,5) + cn(3,5). A39894

a(n) = ∑_k=1..n (binomial(n, k) * 4^k) (mod 5^k). A386663

Starting values for which iterations of A329623 diverge (conjectural). A329917