Properties of the Number 347

Three Hundred Forty-Seven

Basics

Value: 346 → 347 → 348

Parity: odd

Prime: Yes

Previous Prime: 337

Next Prime: 349

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 347

Divisors: 1, 347

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101011011

Octal: 533

Duodecimal: 24B

Hexadecimal: 15b

Square: 120409

Square Root: 18.627936010197157

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: Yes

Fermat Number: No

Cullen Number: No

OEIS Sequences

Lesser of twin primes. A1359

Toothpick sequence (see Comments lines for definition). A139250

Primes of the form 4·k + 3. A2145

Twin primes. A1097

Number of partitions of n into relatively prime parts. Also aperiodic partitions. A837

Safe primes p: (p-1)/2 is also prime. A5385

Emirps (primes whose reversal is a different prime). A6567

Ramanujan primes R_n: a(n) is the smallest number such that if x >= a(n), then π(x) - π(x/2) >= n, where π(x) is the number of primes <= x. A104272

Primes with primitive root 2. A1122

Primes of the form 3n-1. A3627