Properties of the Number 71899

Seventy-One Thousand Eight Hundred Ninety-Nine

Basics

Value: 71898 → 71899 → 71900

Parity: odd

Prime: Yes

Previous Prime: 71887

Next Prime: 71909

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 71899

Divisors: 1, 71899

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001100011011011

Octal: 214333

Duodecimal: 35737

Hexadecimal: 118db

Square: 5169466201

Square Root: 268.13988886400324

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

In this sequence each prime ends a prime century. Place a 0 between the final two digits, and raise the 100s digit by 1, to form the first prime of the next century. A156083

a(n) = 840·n² - 23100·n + 86861. A216257

a(n) = gpf(1 + ∏_k=0..4 prime(n+k)), where gpf is greatest prime factor and prime(i) is the i-th prime. A261210

Least prime in a string of exactly n consecutive primes with primitive root 2, or 0 if no such prime exists. A358980

a(0)=1 and for n>0: a(n) = least prime>a(n-1) of form 1+k·n. A71899