Properties of the Number 28103

Twenty-Eight Thousand One Hundred Three

Basics

Value: 28102 → 28103 → 28104

Parity: odd

Prime: No

Previous Prime: 28099

Next Prime: 28109

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 157 × 179

Divisors: 1, 157, 179, 28103

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110110111000111

Octal: 66707

Duodecimal: 1431B

Hexadecimal: 6dc7

Square: 789778609

Square Root: 167.63949415337663

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

Sequence of pairwise relatively prime numbers of class P₈ (see comment in A275246). A275253

Expansion of ∑_k>=0 x^k / (1 - (k·x)²)^k+1. A360787

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 23 ones. A31791

Area of consecutive Prime-Indexed Prime rectangles. A119658

Number of length-4 0..n arrays with no repeated value differing from the previous repeated value by other than plus two or minus 1. A269641

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 467", based on the 5-celled von Neumann neighborhood. A272320

Number of crossing-maximal order types of n points in the plane. A305375

Consider the spiral of Theodorus (A072895). This sequence is closely related to A224269 and gives the number of k successive revolutions such that the triangles are closer to 360 degrees than any previous triangles. A227626

Number of nX4 0..4 arrays with each element·equal to the number its horizontal and vertical neighbors equal to 3,2,1,4,0 for x=0,1,2,3,4. A197163

Expansion of 1/((1-3x)(1-8x)(1-10x)(1-12x)). A28103