Properties of the Number 99881

Ninety-Nine Thousand Eight Hundred Eighty-One

Basics

Value: 99880 → 99881 → 99882

Parity: odd

Prime: Yes

Previous Prime: 99877

Next Prime: 99901

Digit Sum: 35

Digital Root: 8

Palindrome: No

Factorization: 99881

Divisors: 1, 99881

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11000011000101001

Octal: 303051

Duodecimal: 49975

Hexadecimal: 18629

Square: 9976214161

Square Root: 316.0395544864598

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 p such that the decimal expansion of p remains prime under two iterations of base-10 to base-2 conversions. A123266

Primes of the form 16·m² + 25 for m=1,2,3,... A87857

Largest n-digit emirp (A006567) with nonincreasing digits. A127828

Larger of the greatest cousin prime pair with n digits. A240170

a(n) = A063776(n) + 1. A283843

Primes of the form 16·m² + 25, m=1,3,5,... A87856

Reverse digits of largest primes, append to sequence if result is larger prime then previous one with reverse digits. A98922

Number of pairs of n-node simple graphs that are isospectral (excluding triples, etc.). A99881