Properties of the Number 7913

Seven Thousand Nine Hundred Thirteen

Basics

Value: 7912 → 7913 → 7914

Parity: odd

Prime: No

Previous Prime: 7907

Next Prime: 7919

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 41 × 193

Divisors: 1, 41, 193, 7913

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111011101001

Octal: 17351

Duodecimal: 46B5

Hexadecimal: 1ee9

Square: 62615569

Square Root: 88.95504482602435

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

Expansion of ∏_k>=1 1/(1 - A000009(k)*x^k). A270995

n satisfying σ(n+1) = σ(n-1). A55574

Number A(n,k) of ordered set partitions of {1,2,...,n} such that no part has the same size as any of its k immediate predecessors; square array A(n,k), n>=0, k>=0, read by antidiagonals. A261959

Numerators of central difference coefficients M₃²ⁿ⁺¹. A2673

Pseudoprimes to base 9. A20138

Numbers of the form (4k+3)²+4 or (4k+5)²-8. A214393

Number of nonnegative solutions to x² + y² + z² <= n². A604

Cubes (n·n * n) in carryless arithmetic mod 10. A169885

Numbers k such that 4 is the smallest decimal digit of k³. A291643

a(n) = 4·n² + 4·n - 7. A166147