Properties of the Number 28307

Twenty-Eight Thousand Three Hundred Seven

Basics

Value: 28306 → 28307 → 28308

Parity: odd

Prime: Yes

Previous Prime: 28297

Next Prime: 28309

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 28307

Divisors: 1, 28307

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110111010010011

Octal: 67223

Duodecimal: 1446B

Hexadecimal: 6e93

Square: 801286249

Square Root: 168.24684246665672

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

Smaller term of closest safe prime pairs. A59323

Indices of high points in A245340. A370959

Primes of the form (2+n)*(1+2·n)+(1+n)*(2+2·n). A171748

Sixth term of weak prime sextet: p(m-4)-p(m-5) < p(m-3)-p(m-4) < p(m-2)-p(m-3) < p(m-1)-p(m-2) < p(m)-p(m-1). A54833

Smaller member of a twin prime pair with a triangular sum. A86816

Smaller of the two consecutive primes whose sum is a triangular number. A225077

a(n) = prime(prime(n²)). A217623

Discriminants of imaginary quadratic fields with class number 37 (negated). A351675

Primes p such that p⁴ + p + 1 and p⁴ - p - 1 are also prime. A236073

Form a triangle with n numbers in top row; all other numbers are the sum of their parents. E.g.: 4 1 2 7; 5 3 9; 8 12; 20. The numbers must be positive and distinct and the final number is to be minimized. Sequence gives final number. A28307