Properties of the Number 19211

Nineteen Thousand Two Hundred Eleven

Basics

Value: 19210 → 19211 → 19212

Parity: odd

Prime: Yes

Previous Prime: 19207

Next Prime: 19213

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 19211

Divisors: 1, 19211

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100101100001011

Octal: 45413

Duodecimal: B14B

Hexadecimal: 4b0b

Square: 369062521

Square Root: 138.60375175297384

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

Smallest prime p==3 (mod 8) such that Q(sqrt(-p)) has class number 2n+1. A2148

Primes p == 3 (mod 4) such that the multiplicative order of 2+-i modulo p in Gaussian integers (A385165) is not divisible by 2 or 3. A385188

Primes p such that 2^p-1 and the p-th Fibonacci number have a common factor. Prime terms of A074776. A80050

Smallest prime of the form prime(k) concatenated with prime(k+n). A89782

Prime p such that p and p+2 are twin primes and p²+p-1 p²+p+1 are also twin primes. A228968

Primes of the form T(k) + S(k) + 1 where T(k) is the k-th triangular number and S(k) is the k-th square number. A229080

The 4k+3 integers corresponding to the record positions in A165601. A166046

Primes of the form 2·k² + 3. A201473

Primes p such that p+2 and q are primes, where q is concatenation of binary representations of p and p+2: q = p·2^L + p+2, where L is the length of binary representation of p+2: L=A070939(p+2). A232238