Properties of the Number -86171

Eighty-Six Thousand One Hundred Seventy-One

Basics

Value: -86172 → -86171 → -86170

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 86171

Divisors: 1, 86171

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10101000010011011

Octal: -250233

Duodecimal: -41A4B

Hexadecimal: -1509b

Square: 7425441241

Square Root: 293.54897376758106

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

Largest prime factor of 2ⁿ + 1. A2587

A006530(x)=2 is a local minimum if x=2ⁿ. Running upward with argument x, the largest prime divisor should increase. The value of first peak is a(n). A102643

Irregular triangle in which row n has all primes q such that prime(n)*q is a base-2 Fermat pseudoprime. A180471

Largest primitive factor of 2²ⁿ⁺¹ + 1. A2589

List of primitive prime divisors of the Jacobsthal numbers A001045 in their order of occurrence. A129738

Greatest prime factor of n⁷+1. A240550

Largest prime factor of the n-th Jacobsthal number, A001045(n). A271314

a(n) is the number of divisors of n! with exactly n prime factors (counted with multiplicity). A393241

Expansion of 1/((1-4·x*c(x))(1-x²*c(x))), c(x) the g.f. of A000108. A117381

Primes formed by concatenating n and 2n-1. A309851