Properties of the Number -256139

Two Hundred Fifty-Six Thousand One Hundred Thirty-Nine

Basics

Value: -256140 → -256139 → -256138

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 13 × 17 × 19 × 61

Divisors: 1, 13, 17, 19, 61, 221, 247, 323, 793, 1037

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -111110100010001011

Octal: -764213

Duodecimal: -10428B

Hexadecimal: -3e88b

Square: 65607187321

Square Root: 506.1017684221228

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

If p(k) is the k-th prime, then the n-th set of 4 consecutive cousin prime pairs starts at p(a(n)). A95971

a(n) = ∑_{k=0..floor(n/2)} binomial(n,2·k)*Fibonacci(k). A101890