Properties of the Number 19217

Nineteen Thousand Two Hundred Seventeen

Basics

Value: 19216 → 19217 → 19218

Parity: odd

Prime: No

Previous Prime: 19213

Next Prime: 19219

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 11 × 1747

Divisors: 1, 11, 1747, 19217

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100101100010001

Octal: 45421

Duodecimal: B155

Hexadecimal: 4b11

Square: 369293089

Square Root: 138.62539449898782

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

Numbers k such that 3^k - 2 is prime. A14224

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with all 2X2 subblock sums the same. A184003

a(1) = 11, a(n) = least k such that concatenation of n copies of k with all previous concatenation gives a prime. A111477

Semiprimes (p+4) associated with first prime in A137625. A137627

Number of (n+1) X 4 0..2 arrays with all 2 X 2 subblock sums the same. A183997

Number of (n+1) X 8 0..2 arrays with all 2 X 2 subblock sums the same. A184001

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 0), (-1, 0, 0), (1, -1, 1), (1, 1, 0)}. A149129

Least prime p such that p mod primepi(p) = n. A360789

Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite RON = Roggianite Ca16[Be8Al16Si32O104(OH)16].19H2O starting with a T1 atom. A19217