Properties of the Number -1783

Seven Hundred Eighty-Three

Basics

Value: -1784 → -1783 → -1782

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 1783

Divisors: 1, 1783

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11011110111

Octal: -3367

Duodecimal: -1047

Hexadecimal: -6f7

Square: 3179089

Square Root: 42.22558466143482

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

a(n) = 36·n² - 810·n + 2753, producing the conjectured record number of 45 primes in a contiguous range of n for quadratic polynomials, i.e., abs(a(n)) is prime for 0 <= n < 44. A117081

Expansion of sqrt((1-x+8·x²)/(1-x)³). A108781

a(n) = 8·n³ - 449·n² + 7967·n - 45523. A253045

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 137", based on the 5-celled von Neumann neighborhood. A270277

A symmetrical triangle sequence based on:q=2/12;t(n,m,q)=12*(Binomial[n, m]*(1 - q) + (((n + m + 1)!/((n + 1)!* m!)) + ((2·n - m + 1)!/((n + 1)!*(n - m)!)))*q). A174949

Primes of the form 2x² + 13y². A107132

Primes of the form 7x²+4xy+52y². A140633

Initial members of prime triples (p, p+4, p+6). A22005

Primes of the form x²+Ny², with N=102. A139643

Prime triples: p; p+2 or p+4; p+6 all prime. A7529