Properties of the Number 99901

Ninety-Nine Thousand Nine Hundred One

Basics

Value: 99900 → 99901 → 99902

Parity: odd

Prime: Yes

Previous Prime: 99881

Next Prime: 99907

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 99901

Divisors: 1, 99901

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11000011000111101

Octal: 303075

Duodecimal: 49991

Hexadecimal: 1863d

Square: 9980209801

Square Root: 316.07119451161634

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

Primes having only {0, 1, 9} as digits. A199329

Primes of the form 2·n²+6·n+1. A176549

Smallest prime beginning with exactly n 9's. A65592

Primes containing 999 as a substring. A167292

T(n, 2·n-4), T given by A027960. A27966

a(n) is the largest prime factor of 2ⁿ + 5ⁿ. A337429

a(n) = ∑_{1 <= x₁, x₂, x₃ <= n} gcd(x₁, n)/gcd(x₁, x₂, x₃, n). A373060

The upper (or right) offset of a 196-iterate (A006960) from the smallest palindrome greater than the iterate. A331557

Numbers n such that for every k = 1, 2, ..., A305706(n)-1, it is possible to insert plus signs into the decimal representation of n^k to make sum equal n. A305707

Primes of the form 2·n³ + 5·n² + 3·n + 1. A196153