Properties of the Number 7143

Seven Thousand One Hundred Forty-Three

Basics

Value: 7142 → 7143 → 7144

Parity: odd

Prime: No

Previous Prime: 7129

Next Prime: 7151

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 2381

Divisors: 1, 3, 2381, 7143

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1101111100111

Octal: 15747

Duodecimal: 4173

Hexadecimal: 1be7

Square: 51022449

Square Root: 84.51627062288065

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

T(n,k)=Number of binary arrays of length n+2·k-1 with no more than k ones in any length 2k subsequence (=50% duty cycle). A212402

Numbers n such that (n+j) mod (2+j) = 1 for j from 0 to 5 and (n+6) mod 8 <> 1. A96024

a(n) = (7·n³ + 6·n² + 5·n) / 6. A101165

Number of partitions of n having nonnegative even rank (the rank of a partition is the largest part minus the number of parts). A101709

Sums of three consecutive pentagonal numbers. A129863

Number of nonnegative solutions to x³ + y³ + z³ <= n³. A224215

Expansion of ∏_k>=1 1/(1 + x^k)^sigma₂(k). A288422

a(n) is the number of edges formed by n-secting the angles of an equilateral triangle. A335412

Length of the shorts leg in the unique primitive Pythagorean triple whose inradius is A000032(n) and such that its long leg and its hypotenuse are consecutive natural numbers. A380821

Triangle, read by rows, where T(n,k) = T(n,k-1) + (k+1)*T(n-1,k) for n>k>0, T(n,0)=1 and T(n,n) = T(n,n-1) for n>=0. A102316