Properties of the Number -1297

Two Hundred Ninety-Seven

Basics

Value: -1298 → -1297 → -1296

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 1297

Divisors: 1, 1297

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: -10100010001

Octal: -2421

Duodecimal: -901

Hexadecimal: -511

Square: 1682209

Square Root: 36.013886210738214

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 1/(1 - x*∏_k>=1 1/(1 + k·x^k)). A299210

a(n) is the minimal determinant of an n X n Toeplitz matrix using the integers 0 to 2*(n - 1). A358567

a(n) is the minimal determinant of an n X n Hankel matrix using the integers 0 to 2*(n - 1). A368353

Expansion of g.f. (1+x²)/(1+x-x³). A104770

Triangle T(n,k), read by rows, formed by setting all entries in the zeroth column and in the main diagonal ((n,n) entries) to 1 and defining the rest of the entries by the recursion T(n,k) = T(n-1,k) - T(n,k-1). A96470

The sequence of coefficients of cubic polynomials p(x-n), where p(x) = x³ - 3·x + 1. A218332

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

a(n) = -n² + 21·n - 1. A332884

a(n) = n² + 1. A2522