Properties of the Number 20051

Twenty Thousand Fifty-One

Basics

Value: 20050 → 20051 → 20052

Parity: odd

Prime: Yes

Previous Prime: 20047

Next Prime: 20063

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 20051

Divisors: 1, 20051

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100111001010011

Octal: 47123

Duodecimal: B72B

Hexadecimal: 4e53

Square: 402042601

Square Root: 141.60155366379283

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

Luhn primes: primes p such that p + (p reversed) is also a prime. A61783

Primes of the form abs(3n³ - 183n² + 3318n - 18757) in order of increasing nonnegative n. A272401

Indices of squares of primes in A098550. A251240

a(n) is the n-th prime whose decimal expansion begins with the decimal expansion of n. A77345

Primes that remain prime through 3 iterations of function f(x) = 9x + 4. A23297

Consider a room of size r X s where rs = 2n and 1 <= r <= s; count ways to arrange n Tatami mats in room; a(n) = total number of ways for all choices of r and s. Two arrangements are considered the same if one is a rotation or reflection of the other. A52270

Sum of terms in n-th rows of triangle in A077159. A77162

Prime values in A067439, in the order in which they appear. A340736

Row sums of A081964. A81966

Primes congruent to 50 mod 59. A142777