Properties of the Number 229

Two Hundred Twenty-Nine

Basics

Value: 228 → 229 → 230

Parity: odd

Prime: Yes

Previous Prime: 227

Next Prime: 233

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 229

Divisors: 1, 229

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11100101

Octal: 345

Duodecimal: 171

Hexadecimal: e5

Square: 52441

Square Root: 15.132745950421556

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

The prime numbers. A40

Prime numbers at the beginning of the 20th century (today 1 is no longer regarded as a prime). A8578

Pythagorean primes: primes of the form 4·k + 1. A2144

Greater of twin primes. A6512

Odd primes. A65091

a(n) = 4·n + 1. A16813

Primes of the form 6m + 1. A2476

Twin primes. A1097

Primes having only {1, 2, 9} as digits. A385776

"Fermi-Dirac primes": numbers of the form p^{2^k} where p is prime and k >= 0. A50376

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