Properties of the Number 68819

Sixty-Eight Thousand Eight Hundred Nineteen

Basics

Value: 68818 → 68819 → 68820

Parity: odd

Prime: Yes

Previous Prime: 68813

Next Prime: 68821

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 68819

Divisors: 1, 68819

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000110011010011

Octal: 206323

Duodecimal: 339AB

Hexadecimal: 10cd3

Square: 4736054761

Square Root: 262.3337568823349

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

T(n,k)=Number of length n+3 0..k arrays with no four elements in a row with pattern aabb (with a≠b) and new values 0..k introduced in 0..k order. A242584

First of three consecutive primes p, q, r such that p + q - r, p² + q² - r² and p³ + q³ - r³ are all prime. A358744

Lesser p of twin primes (p,q) such that there exists an integer between sqrt(2p) and sqrt(2q). A145701

Lesser of consecutive primes whose sum is of the form k*(k+2), for some integer k. A242384

Primes of the form 9·k²-10·k+3. A154261

Twin prime pairs p, p+2 such that p+(p+2)+1 and p*(p+2)+1 are both square. A166564

Number of length n+3 0..4 arrays with no four elements in a row with pattern aabb (with a≠b) and new values 0..4 introduced in 0..4 order. A242580

Primes p such that the 10's complement A089186(p) and the concatenations of p and A089186(p) and of A089186(p) and p are all prime. A372082

Numbers k such that 125·2^k+1 is prime. A32412

E.g.f.: exp((exp(p·x)-p-1)/p+exp(x)) for p=12. A36082