Properties of the Number 78361

Seventy-Eight Thousand Three Hundred Sixty-One

Basics

Value: 78360 → 78361 → 78362

Parity: odd

Prime: No

Previous Prime: 78347

Next Prime: 78367

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 23 × 3407

Divisors: 1, 23, 3407, 78361

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10011001000011001

Octal: 231031

Duodecimal: 39421

Hexadecimal: 13219

Square: 6140446321

Square Root: 279.93034847976026

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

Number of isomorphism classes of simply embedded (i.e., loop-free and without parallel edges bounding a disk) bipartite quadrangulations of RP² of minimum degree 3 with n nodes and n-1 faces. A187014

Minimal positive solution a(n) of Pell equation a(n)² - D(n)*b(n)² = +4 or -4 with D(n)=A077425(n). The companion sequence is b(n)=A077058(n). A78361

Number of (n+2)X(1+2) 0..2 arrays with every consecutive three elements in every row having 2 or 3 distinct values, in every column 1 or 2 distinct values, in every diagonal 2 distinct values, and in every antidiagonal 2 distinct values, and new values 0 upwards introduced in row major order. A252877