Properties of the Number 791

Seven Hundred Ninety-One

Basics

Value: 790 → 791 → 792

Parity: odd

Prime: No

Previous Prime: 787

Next Prime: 797

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 7 × 113

Divisors: 1, 7, 113, 791

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100010111

Octal: 1427

Duodecimal: 55B

Hexadecimal: 317

Square: 625681

Square Root: 28.124722220850465

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

Sum of the first n primes. A7504

Indices k such that (1/3)*(prime(k)+prime(k+1)+prime(k+2)) is a prime. A64113

Number of elements in the set {(x,y): 1 <= x,y <= n, gcd(x,y)=1}. A18805

The "comma sequence": the lexicographically earliest sequence of positive numbers with the property that the sequence formed by the pairs of digits adjacent to the commas between the terms is the same as the sequence of successive differences between the terms. A121805

Centered tetrahedral numbers. A5894

Number of compositions (ordered partitions) of n that are concave-down sequences. A70211

a(n) = least positive k such that the remainder when 3^k is divided by k is n. A78457

-1 + number of partitions of n. A65

Primes written backwards. A4087

Number of partitions of n into parts >= 4. A8484