Properties of the Number 68881

Sixty-Eight Thousand Eight Hundred Eighty-One

Basics

Value: 68880 → 68881 → 68882

Parity: odd

Prime: Yes

Previous Prime: 68879

Next Prime: 68891

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 68881

Divisors: 1, 68881

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000110100010001

Octal: 206421

Duodecimal: 33A41

Hexadecimal: 10d11

Square: 4744592161

Square Root: 262.45190035509364

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

Primes with either no internal digits or all internal digits are 8. A69683

Inverse Moebius transform of A000056. A350156

Primes having only {1, 6, 8} as digits. A385782

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of e.g.f.: exp(∏_j=1..n 1/(1+x^j) - 1). A294289

Primes containing 888 as a substring. A167290

a(0) = 12, after which, if (2·a(n-1)) - 1 = ∏_{k >= 1} (p_k)^c_k then a(n) = ∏_{k >= 1} (p_k-1)^c_k, where p_k indicates the k-th prime, A000040(k). A246343

Primes of the form k³ - k + 1. A100698

Greater of twin primes p such that 3·p-2 is also greater of twin primes. A177336

Primes of the form p^k - p + 1 for prime p. A34915

E.g.f.: exp(1/((1+x)*(1+x²)) - 1). A294290