Properties of the Number 70321

Seventy Thousand Three Hundred Twenty-One

Basics

Value: 70320 → 70321 → 70322

Parity: odd

Prime: Yes

Previous Prime: 70313

Next Prime: 70327

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 70321

Divisors: 1, 70321

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001001010110001

Octal: 211261

Duodecimal: 34841

Hexadecimal: 112b1

Square: 4945043041

Square Root: 265.18107021429716

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 p such that 2p²-1, 3p²-2 and 4p²-3 are also prime. A213079

Primes p such that 2p²-1, 3p²-2, 4p²-3, and 5p²-4 are also prime. A213107

a(n) = a(n-2) + a(n-4) + a(n-5) + a(n-7) + a(n-8) + a(n-10) for n >= 10, with a(0) = ... = a(9) = 1. A122762

Strong (2,3,5)-primes (see comments). A262727

Number of 0..n arrays x(0..3) of 4 elements with nondecreasing average value and 0..n occur with instance counts within one of each other. A200943

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 21. A31609

Greatest squarefree number <= n. A70321

Primes p such that p + q² + r³ is also prime, where p, q and r are consecutive primes. A304292