Properties of the Number -7743

Seven Hundred Forty-Three

Basics

Value: -7744 → -7743 → -7742

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 29 × 89

Divisors: 1, 3, 29, 87, 89, 267, 2581, 7743

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1111000111111

Octal: -17077

Duodecimal: -4593

Hexadecimal: -1e3f

Square: 59954049

Square Root: 87.99431799837987

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

Square array T(n,k), n >= 1, k >= 0, read by antidiagonals downwards, where T(n,k) = ∑_j=1..n (-k)^floor(n/j - 1). A345033

a(n) = ∑_k=1..n (-n)^floor(n/k - 1). A345036

Number of nonempty subsets of {1, 2, ..., n} having pairwise coprime elements. A187106

21-gonal numbers: a(n) = n*(19n - 17)/2. A51873

a(n) = n*(2·n² -3·n +7)/6 = C(n, 1) + C(n, 2) + 2·C(n, 3). A81489

Starts of runs of 4 consecutive Gray-code Niven numbers (A344341). A344344

Odd composite integers m such that F(m)² == 1 (mod m), where F(m) is the m-th Fibonacci number. A337231

Odd composites m that divide Fibonacci(m)-1. A94394

a(n) = 16n² + 32n + 15. A141759

a(n) is the side length of the simple perfect squared square of order n leading to a maximum of the ratio of the side length of its smallest element A349205(n) to its total side length. A349206