Properties of the Number 8104

Eight Thousand One Hundred Four

Basics

Value: 8103 → 8104 → 8105

Parity: even

Prime: No

Previous Prime: 8101

Next Prime: 8111

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ³ × 1013

Divisors: 1, 2, 4, 8, 1013, 2026, 4052, 8104

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 1111110101000

Octal: 17650

Duodecimal: 4834

Hexadecimal: 1fa8

Square: 65674816

Square Root: 90.0222194794152

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

Numbers k for which 10k+1, 10k+3, 10k+7 and 10k+9 are primes. A7811

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or antidiagonally, with no adjacent elements equal. A232589

Triangle read by rows: T(n,k) = number of AVL trees of height n with k (leaf-) nodes, n>=0, fibonacci(n+2)<=k<=2ⁿ. A143897

Powers of e rounded up. A1671

Numbers that are equal to the sum of their anti-divisors. A73930

Triangle read by columns: T(n,k) = number of AVL trees of height n with k (leaf-) nodes, k>=1, A029837(k)<=n<A072649(k). A217298

a(n) = round( 1 + e^n-2 ). A55876

a(n) = ceiling(exp((n-1)/2)). A5181

Iccanobirt numbers (4 of 15): a(n) = R(a(n-1)) + a(n-2) + a(n-3), where R is the digit reversal function A004086. A102114

Anti-multiply-perfect numbers. Numbers n for which σ*(n)/n is an integer, where σ*(n) is the sum of the anti-divisors of n. A214842