Properties of the Number -105985

One Hundred Five Thousand Nine Hundred Eighty-Five

Basics

Value: -105986 → -105985 → -105984

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 5 × 11 × 41 × 47

Divisors: 1, 5, 11, 41, 47, 55, 205, 235, 451, 517

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11001111000000001

Octal: -317001

Duodecimal: -51401

Hexadecimal: -19e01

Square: 11232820225

Square Root: 325.5533750401

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

One ninth of the alternating sum of the squares of the first n Fibonacci numbers with index divisible by 4. A156093

Triangle T(n, k, m) = t(n, m)/(t(k, m)*t(n-k, m)), where t(n, k) = ∏_j=1..n p(j, k+1), p(n, x) = ∑_j=0..n (-1)^j*A053122(n, j)*x^j, and m = 8, read by rows. A156602

a(1)=1, a(n) = a(n-1) + n³ if n odd, a(n) = a(n-1) + n² if n is even. A140154

a(n) sets a new record for the Lychrel number a(n) of 'Reverse and Add' steps, needed to reach a Lychrel number m < a(n) (i.e., its seed). A323975

a(0)=1, a(1)=4; thereafter a(n) = 13·4ⁿ/8-2ⁿ⁺¹+1. A256959

Let q be the n-th prime power (A246655), then a(n) = q³ + q² - q; number of solutions to x·y = z·w in the finite field F_q. A367014