Properties of the Number 18763

Eighteen Thousand Seven Hundred Sixty-Three

Basics

Value: 18762 → 18763 → 18764

Parity: odd

Prime: No

Previous Prime: 18757

Next Prime: 18773

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 29 × 647

Divisors: 1, 29, 647, 18763

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100100101001011

Octal: 44513

Duodecimal: AA37

Hexadecimal: 494b

Square: 352050169

Square Root: 136.9781004394498

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 integer compositions of n whose leaders of strictly increasing runs are identical. A374686

Values of n such that L(20) and N(20) are both prime, where L(k) = (n²+n+1)*2^2·k + (2·n+1)*2^k + 1, N(k) = (n²+n+1)*2^k + n. A227523

Semiprimes that are the sum of the first n semiprimes for some n. A92190

Sum of prime parts, counted without multiplicity, in all compositions of n. A336579

a(n) = p(n)*p(n+1)*(p(n+1) - p(n)) + 1, where p(n) = prime(n). A383242

Positive numbers y such that y² is of the form x²+(x+647)² with integer x. A159641

The smallest k >= 0 that can be represented as a linear combination of 1², 2², ..., n² with coefficients +-1 and that cannot be represented using 1², 2², ..., m² with 1<=m<n. A392127

Number of vertices in a complete bipartite graph where the n vertices of each part are placed on the vertices, and on opposite sides, of a regular 2n-gon. A392971

a(1) = 1, a(2) = 2; for n >= 2, a(n+1) = a(n) + sum of the unique prime factors of a(n). A96460

a(n) is the smallest number that belongs simultaneously to the two arithmetic progressions prime(n) + m·prime(n+1) and prime(n+1) + m·prime(n+2), m >= 1, n >= 1. A319524