Properties of the Number 2791

Two Thousand Seven Hundred Ninety-One

Basics

Value: 2790 → 2791 → 2792

Parity: odd

Prime: Yes

Previous Prime: 2789

Next Prime: 2797

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2791

Divisors: 1, 2791

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 101011100111

Octal: 5347

Duodecimal: 1747

Hexadecimal: ae7

Square: 7789681

Square Root: 52.82991576748916

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

Hex (or centered hexagonal) numbers: 3·n*(n+1)+1 (crystal ball sequence for hexagonal lattice). A3215

Cuban primes: primes which are the difference of two consecutive cubes. A2407

First member of a prime triple in a 2p-1 progression. A57326

Smallest primitive factor of 10ⁿ - 1. Also smallest prime p such that 1/p has repeating decimal expansion of period n. A7138

Primes congruent to 1 mod 31. A142005

Number of regions that the line segments in A091908(n) cut the equilateral triangle into. A92098

Balanced primes of order two. A82077

Dispersion of A047219, (numbers >1 and congruent to 1 or 3 mod 5), by antidiagonals. A191727

Compound filter: a(n) = T(A000010(n), A046523(n)), where T(n,k) is sequence A000027 used as a pairing function. A286160

Initial term in sequence of four consecutive primes separated by 3 consecutive differences each <=6 (i.e., when d=2,4 or 6) and forming d-pattern=[6, 4,2]; short d-string notation of pattern = [642]. A78855