Properties of the Number 349

Three Hundred Forty-Nine

Basics

Value: 348 → 349 → 350

Parity: odd

Prime: Yes

Previous Prime: 347

Next Prime: 353

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 349

Divisors: 1, 349

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101011101

Octal: 535

Duodecimal: 251

Hexadecimal: 15d

Square: 121801

Square Root: 18.681541692269406

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

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

Greater of twin primes. A6512

Primes of the form 6m + 1. A2476

Twin primes. A1097

Primes p such that p + 4 is also prime. A23200

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 congruent to 1 or 2 modulo 4; or, primes of form x² + y²; or, -1 is a square mod p. A2313

Primes congruent to 1 (mod 12). A68228

Numbers k such that 5^k - 4^k is prime. A59802