Properties of the Number 2023

Two Thousand Twenty-Three

Basics

Value: 2022 → 2023 → 2024

Parity: odd

Prime: No

Previous Prime: 2017

Next Prime: 2027

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 7 × 17 ²

Divisors: 1, 7, 17, 119, 289, 2023

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 11111100111

Octal: 3747

Duodecimal: 1207

Hexadecimal: 7e7

Square: 4092529

Square Root: 44.97777228809804

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

Flavius Josephus's sieve: Start with the natural numbers; at the k-th sieving step, remove every (k+1)-st term of the sequence remaining after the (k-1)-st sieving step; iterate. A960

Number of condensed integer partitions of n. A239312

a(n) = n² - 2. A8865

Numbers k such that k, k + 1 and k + 2 are 3 consecutive Harshad numbers. A154701

Integers k such that 10^k+49 is prime. A108054

Multiples of 7 whose sum of digits is equal to 7. A63416

Smallest of 3 consecutive numbers each divisible by a square. A70258

Positions of occurrences of the natural numbers as fourth subsequence in A100035. A100039

Triangular array T(n,k), read by rows: coefficients of strong divisibility sequence of polynomials p(1,x) = 1, p(2,x) = 2 + 3·x, p(n,x) = u·p(n-1,x) + v·p(n-2,x) for n >= 3, where u = p(2,x), v = 1 - 2·x - x². A367297

a(n) = 7·n². A33582

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