Properties of the Number -81103

Eighty-One Thousand One Hundred Three

Basics

Value: -81104 → -81103 → -81102

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 11 × 73 × 101

Divisors: 1, 11, 73, 101, 803, 1111, 7373, 81103

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10011110011001111

Octal: -236317

Duodecimal: -3AB27

Hexadecimal: -13ccf

Square: 6577696609

Square Root: 284.78588448165755

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

a(n) = (2·n-1)*(5·n²-5·n+6)/6. A63489

Divisors of 99999999. A27890

a(n) is the index of the smallest triangular number containing exactly n 8's. A48363

Numbers m such that the largest digit in the decimal expansion of 1/m is 3. A350814

Divisors of 11111111. A197308

a(n) = T(2n,n-2), where T is the array in A026120. A26131

a(1) = a(3) = 0, and otherwise a(n) is the least multiple of prime(n) whose decimal representation ends with that of prime(n+1). A333845

a(n) = ∑_k=1..n-1 τ(k) * sigma₂(n-k). A374973

Positions of records in A174414. A376219

Integers k such that k + 1 has a divisor that is an anagram of k, which must have the same number of digits as k. A384597