Properties of the Number 86000

Eighty-Six Thousand

Basics

Value: 85999 → 86000 → 86001

Parity: even

Prime: No

Previous Prime: 85999

Next Prime: 86011

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ⁴ × 5 ³ × 43

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 25, 40

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10100111111110000

Octal: 247760

Duodecimal: 41928

Hexadecimal: 14ff0

Square: 7396000000

Square Root: 293.2575659723036

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(0)=2; for n>=1, a(n) = smallest prime p such that there is a gap of exactly 2n between p and next prime, or -1 if no such prime exists. A230

For p = prime(n), a(n) is the smallest N such that pN is a base-2 pseudoprime (that is, 2^pN-1 = 1 mod pN). A86000

Places n where A225867(n) <= 2. A226977

Numbers k that divide 7^k + 5^k. A45596

Number of (n+1)X(2+1) 0..3 arrays with nondecreasing max(x(i,j),x(i,j-1)) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction. A250530

Number of (2+1)X(n+1) 0..3 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction. A250709

Least number k > 0 such that n^k contains n·R_n in its decimal representation, or 0 if no such k exists. A248018

Numbers k such that (28·10^k + 149)/3 is prime. A293281