Properties of the Number 797

Seven Hundred Ninety-Seven

Basics

Value: 796 → 797 → 798

Parity: odd

Prime: Yes

Previous Prime: 787

Next Prime: 809

Digit Sum: 23

Digital Root: 5

Palindrome: Yes

Factorization: 797

Divisors: 1, 797

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100011101

Octal: 1435

Duodecimal: 565

Hexadecimal: 31d

Square: 635209

Square Root: 28.231188426986208

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: Yes

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Palindromic primes: prime numbers whose decimal expansion is a palindrome. A2385

Prime-indexed primes: primes with prime subscripts. A6450

Primes with primitive root 2. A1122

Primes of the form k² + k + 41. A5846

Primes whose reversal in base 10 is also prime (called "palindromic primes" by David Wells, although that name usually refers to A002385). Also called reversible primes. A7500

Irregular primes: primes p such that at least one of the numerators of the Bernoulli numbers B₂, B₄, ..., B_p-3 (A000367) is divisible by p. A928

Primes of form 10n+7. A30432

Primes such that their decimal representations interpreted in base 11 are also prime. A91924

Right-truncatable primes: every prefix is prime. A24770

Primes of the form 8k + 5. A7521