Properties of the Number 20101

Twenty Thousand One Hundred One

Basics

Value: 20100 → 20101 → 20102

Parity: odd

Prime: Yes

Previous Prime: 20089

Next Prime: 20107

Digit Sum: 4

Digital Root: 4

Palindrome: No

Factorization: 20101

Divisors: 1, 20101

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 100111010000101

Octal: 47205

Duodecimal: B771

Hexadecimal: 4e85

Square: 404050201

Square Root: 141.77799547179387

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

Primes whose sum of digits is 4. A62339

Primes having only {0, 1, 2} as digits. A36953

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, 6, 4]; short d-string notation of pattern = [664]. A78858

Number of integer partitions of n with a neighborless singleton. A356235

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

Primes with maximal digit = 2. A106100

Numbers with digits in {0,1,2} such that every other digit is strictly less than its neighbors. A306105

Base 2i representation of nonnegative integers. A212494

Quintan primes: p = (x⁵ - y⁵)/(x - y). A2649

Primes of the form 8·n² + 2·n + 1. A188382