Properties of the Number 20147

Twenty Thousand One Hundred Forty-Seven

Basics

Value: 20146 → 20147 → 20148

Parity: odd

Prime: Yes

Previous Prime: 20143

Next Prime: 20149

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 20147

Divisors: 1, 20147

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 100111010110011

Octal: 47263

Duodecimal: B7AB

Hexadecimal: 4eb3

Square: 405901609

Square Root: 141.940128223135

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 from merging of 5 successive digits in decimal expansion of sqrt(2). A198165

Class 8- primes. A81427

Positions of records in A064097. A105017

Primes for which the period of the reciprocal equals (p-1)/14. A135073

Primes which when added to their reversals are squares. A59799

Primes p such that the sum of p and its reversal is the square of a prime. A367796

Primes p such that p+2, p² - 2p + 2, and p² - 2p + 4 are all prime. A101315

Smallest number with "natural" logarithm n, cf. A061373. A182061

a(n) is the least prime p, such that next_prime(2·p) - 2·p = 2·n - 1. A59846

Primes congruent to 28 mod 59. A142755