Properties of the Number 8158

Eight Thousand One Hundred Fifty-Eight

Basics

Value: 8157 → 8158 → 8159

Parity: even

Prime: No

Previous Prime: 8147

Next Prime: 8161

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 4079

Divisors: 1, 2, 4079, 8158

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 1111111011110

Octal: 17736

Duodecimal: 487A

Hexadecimal: 1fde

Square: 66552964

Square Root: 90.3216474606171

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

Good examples of Hall's conjecture: integers·such that 0 < |x³ - y²| < sqrt(x) for some integer y. A78933

Values·for records of minima of positive distance d between a square cubefree integer y and a cube of positive and squarefree integer·and such d = y² - x³. A179108

a(n) is the n-th J₂₀-prime (Josephus₂₀ prime). A163800

Triangle read by rows: T(n,k) is the number of sensed combinatorial maps with n edges and genus k, 0 <= k <= floor(n/2). A379438

Number of unrooted maps with n edges of (orientable) genus 3. A104596

Records in A347113. A347307

Numbers k such that the continued fraction for sqrt(k) has period 100. A20439

Number of nonnegative solutions to x³ + y³ + z³ <= n³. A224215

Indices of squares of primes in A098550. A251240

Numbers which need eleven 'Reverse and Add' steps to reach a palindrome. A65216