Properties of the Number 70921

Seventy Thousand Nine Hundred Twenty-One

Basics

Value: 70920 → 70921 → 70922

Parity: odd

Prime: Yes

Previous Prime: 70919

Next Prime: 70937

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 70921

Divisors: 1, 70921

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001010100001001

Octal: 212411

Duodecimal: 35061

Hexadecimal: 11509

Square: 5029788241

Square Root: 266.3099697720684

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 that are the first in a run of exactly 4 emirps. A346024

Let p = n-th irregular prime, A000928(n). Then a(n) = smallest value of m such that numerator(Bernoulli(2·m)/(2·m)) / numerator(Bernoulli(2·m)/(2·m*(2·m-1))) equals p. A92291

a(n) = 288·n² - 168·n - 119. A118059

Primes of the form x² + 18480·y². A173274

Primes that yield squares after deletion of their zero digits. A321151

a(n) = Card{ (x,y,z,u,v) | lcm(x,y,z,u,v)=n }. A70921