Properties of the Number 7279

Seven Thousand Two Hundred Seventy-Nine

Basics

Value: 7278 → 7279 → 7280

Parity: odd

Prime: No

Previous Prime: 7253

Next Prime: 7283

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 29 × 251

Divisors: 1, 29, 251, 7279

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110001101111

Octal: 16157

Duodecimal: 4267

Hexadecimal: 1c6f

Square: 52983841

Square Root: 85.31705573916625

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) = 4·a(n-1) + n with n > 1, a(1)=1. A14825

T(n,k) = n·T(n,k-1) + k, with T(n,1) = 1, square array read by ascending antidiagonals (n >= 0, k >= 1). A126885

Numbers m such that 2^m reversed is prime. A57708

T(n,k)=Number of nXk arrays with each row a permutation of 1..k having at least as many downsteps as the preceding row. A221623

Triangular array T(n,k), read by rows: coefficients of strong divisibility sequence of polynomials p(1,x) = 1, p(2,x) = 1 + 2·x, p(n,x) = u·p(n-1,x) + v·p(n-2,x) for n >= 3, where u = p(2,x), v = 1 + 3·x². A368518

T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 2, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero. A299682

a(n) = n³ + (n+1)*(n+2). A270109

Alternating sum transform (PSumSIGN) of A000975. A34299

Least k such that the Collatz (3x+1) iteration starting with k has "dropping time" A122437(n). A122442

Number of partitions of n such that the number of parts having multiplicity >1 is a part and the number of distinct parts is not a part. A241411