Properties of the Number 71109

Seventy-One Thousand One Hundred Nine

Basics

Value: 71108 → 71109 → 71110

Parity: odd

Prime: No

Previous Prime: 71089

Next Prime: 71119

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7901

Divisors: 1, 3, 9, 7901, 23703, 71109

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001010111000101

Octal: 212705

Duodecimal: 35199

Hexadecimal: 115c5

Square: 5056489881

Square Root: 266.6627083039546

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

Reversion of Jacobsthal numbers A001045. A91593

Reversion of x*(1-2·x)/(1-3·x). A154825

Triangle, read by rows, of the coefficients of [x^k] in G100228(x)ⁿ such that the row sums are 4ⁿ-1 for n>0, where G100228(x) is the g.f. of A100228. A100229

Expansion of ∏_k>=1 1/(1+2·x^k). A71109

Number of 3Xn 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements. A284077