Properties of the Number 99661

Ninety-Nine Thousand Six Hundred Sixty-One

Basics

Value: 99660 → 99661 → 99662

Parity: odd

Prime: Yes

Previous Prime: 99643

Next Prime: 99667

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 99661

Divisors: 1, 99661

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 11000010101001101

Octal: 302515

Duodecimal: 49811

Hexadecimal: 1854d

Square: 9932314921

Square Root: 315.69130491668597

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 of the form 2·n² + 46·n + 21. A217495

Value of prime number D for incrementally largest values of minimal·satisfying the equation x² - D·y² = 5. A341079

E.g.f. A(x) satisfies A(x) = exp( x * (1+x)³ * A(x)² ). A390057

Value of prime number D for incrementally largest values of minimal y satisfying the equation x²-D·y²=5. A341081

Sum of 1-fibits in Zeckendorf-expansion A014417(p) summed for all primes p in range [Fib(n+1),Fib(n+2)[ (where Fib = A000045). A95353

a(n) is the least prime following A002281(n) repdigits. A99661

Numbers k such that (299·10^k - 17)/3 is prime. A281063