Properties of the Number 8219

Eight Thousand Two Hundred Nineteen

Basics

Value: 8218 → 8219 → 8220

Parity: odd

Prime: Yes

Previous Prime: 8209

Next Prime: 8221

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 8219

Divisors: 1, 8219

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000000011011

Octal: 20033

Duodecimal: 490B

Hexadecimal: 201b

Square: 67551961

Square Root: 90.65870063044142

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

Number of locally disjoint rooted trees with n nodes, meaning no branch overlaps any other (unequal) branch of the same root. A316473

Primes with first digit 8. A45714

Primes p with p + 2 and prime(p) + 2 both prime. A236458

Primes such that the sum of the predecessor and successor primes is divisible by 31. A113155

a(n) = 2ⁿ + 2·n + 1. A176691

Primes p with q = p + 2 and prime(q) + 2 both prime. A236457

Start of a string of exactly 2 consecutive (but disjoint) pairs of twin primes. A35790

a(0) = 2; a(n) for n > 0 is the smallest prime greater than a(n-1) that differs from a(n-1) by a square. A73609

Primes of the form 2^a + 3^b. A4051

Primes p such that (p-1)*(p+1)-+p are primes. A154939