Properties of the Number 78903

Seventy-Eight Thousand Nine Hundred Three

Basics

Value: 78902 → 78903 → 78904

Parity: odd

Prime: No

Previous Prime: 78901

Next Prime: 78919

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 11 × 797

Divisors: 1, 3, 9, 11, 33, 99, 797, 2391, 7173, 8767

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011010000110111

Octal: 232067

Duodecimal: 397B3

Hexadecimal: 13437

Square: 6225683409

Square Root: 280.8967781944108

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 (n+1) X (2+1) 0..1 arrays with every 2 X 2 subblock ne-sw antidiagonal difference nondecreasing horizontally and nw+se diagonal sum nondecreasing vertically. A258548

a(1) = a(2) = 1, a(n) = A014777(a(n-1) + a(n-2)), n >= 3. A280532

Poincaré series for invariant polynomial functions on the space of binary forms of degree 15. A293940

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 2 or 3 king-move adjacent elements, with upper left element zero. A303727

a(n) = n² - ∑_u=1..n ∑_v=1..u valuation(2·v, 2). A78903