Properties of the Number 81119

Eighty-One Thousand One Hundred Nineteen

Basics

Value: 81118 → 81119 → 81120

Parity: odd

Prime: Yes

Previous Prime: 81101

Next Prime: 81131

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 81119

Divisors: 1, 81119

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011110011011111

Octal: 236337

Duodecimal: 3AB3B

Hexadecimal: 13cdf

Square: 6580292161

Square Root: 284.81397437625844

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 having only {1, 8, 9} as digits. A385783

Number T(n,k) of tilings of an n X k rectangle using integer-sided square tiles reduced for symmetry, where the orbits under the symmetry group of the rectangle, D2, have 4 elements; triangle T(n,k), k >= 1, 0 <= n < k, read by columns. A224867

McKay-Thompson series of class 22a for Monster. A58569

Primes such that the outer 2 digits are n and n+1 and all inner digits are 1, where 0 < n < 9. A108818

Primes p such that A272207(p) = p. A276030

a(1)=1, a(n) is the smallest integer > a(n-1) such that the sum of elements of the simple continued fraction for S(n)=1/a(1)+1/a(2)+...+1/a(n) equals n³. A71971

Primes which are 1 + strobogrammatic numbers A000787(n): the same upside down. A105268

Number of integral solutions to Mordell's equation y² = x³ + n. A81119

Indices of primes in sequence defined by A(0) = 89, A(n) = 10·A(n-1) - 71 for n > 0. A101060

Numbers n such that 8·10ⁿ + R_n + 8 is prime, where R_n = 11...1 is the repunit (A002275) of length n. A103073