Properties of the Number 66109

Sixty-Six Thousand One Hundred Nine

Basics

Value: 66108 → 66109 → 66110

Parity: odd

Prime: Yes

Previous Prime: 66107

Next Prime: 66137

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 66109

Divisors: 1, 66109

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10000001000111101

Octal: 201075

Duodecimal: 32311

Hexadecimal: 1023d

Square: 4370399881

Square Root: 257.11670501933554

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 n such that n, 10·n+1, 10·n+3, 10·n+7 and 10·n+9 are all primes. A67267

Denominators of continued fraction convergents to sqrt(819). A42581

Numbers k for which 10k + 1, 10k + 3, 10k + 7, 10k + 9 and 10k + 13 are primes. A178084

Let p(k) = k-th prime; sequence gives primes q of the form q = k·p(k) - 1 for some k. A96065

L.g.f.: log(∏_k>=1 (1 + x^k/(1 + x))) = ∑_k>=1 a(k)*x^k/k. A307762

Primes such that the next 10 prime gaps are all distinct. A372550

Numbers k for which 10k+1, 10k+3, 10k+7, 10k+9, 10k+13 and 10k+19 are primes. A178083

Numbers k such that sigma₄(k)/sigma₂(k) is prime. A66109