Properties of the Number 72271

Seventy-Two Thousand Two Hundred Seventy-One

Basics

Value: 72270 → 72271 → 72272

Parity: odd

Prime: Yes

Previous Prime: 72269

Next Prime: 72277

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 72271

Divisors: 1, 72271

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001101001001111

Octal: 215117

Duodecimal: 359A7

Hexadecimal: 11a4f

Square: 5223097441

Square Root: 268.8326617061253

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

T(n,k)=Number of length n+4 0..k arrays with every five consecutive terms having the maximum of some two terms equal to the minimum of the remaining three terms. A254698

Primes that remain prime through 3 iterations of function f(x) = 6x + 1. A23287

Primes p = 1 mod 6 such that all three iterations p=(6p+1) give primes = 1 mod 6. A210686

Primes formed by concatenating palindromes having even number of digits with 1. A210534

Primes whose base-9 representation also is the base-3 representation of a prime. A235472

Number of length n+4 0..4 arrays with every five consecutive terms having the maximum of some two terms equal to the minimum of the remaining three terms. A254694

Number of length 5+4 0..n arrays with every five consecutive terms having the maximum of some two terms equal to the minimum of the remaining three terms. A254703

Twin primes belonging to packs of four or more twin pairs. A68220

Start with 1 and repeatedly reverse the digits and add 66 to get the next term. A118200

Triangle read by rows: T(n,k) (n >= 2, 1 <= k <= n-1) = Euclidean distance degree of variety of n X n matrices of rank <= k. A232496