Properties of the Number 2543

Two Thousand Five Hundred Forty-Three

Basics

Value: 2542 → 2543 → 2544

Parity: odd

Prime: Yes

Previous Prime: 2539

Next Prime: 2549

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2543

Divisors: 1, 2543

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 100111101111

Octal: 4757

Duodecimal: 157B

Hexadecimal: 9ef

Square: 6466849

Square Root: 50.428166732491874

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

Lucasian primes: p == 3 (mod 4) with 2·p+1 prime. A2515

Primes congruent to 1 mod 31. A142005

Members of A164368 which are not Ramanujan primes. A164288

Number of partitions of n where every part appears more than two times. A100405

Least k>p such that (kp)³ divides (p-1)^kp²+1 for prime p = A000040(n). A128677

Primes p such that x⁴¹ = 2 has no solution mod p. A59236

Sixth term of strong prime sextets: p(m-4)-p(m-5) > p(m-3)-p(m-4) > p(m-2)-p(m-3) > p(m-1)-p(m-2) > p(m)-p(m-1). A54818

Primes of the form 24·k - 1. A134517

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, 2,6]; short d-string notation of pattern = [626]. A78854

a(n) = (3·n² + n + 2)/2. A104249