Properties of the Number 71999

Seventy-One Thousand Nine Hundred Ninety-Nine

Basics

Value: 71998 → 71999 → 72000

Parity: odd

Prime: Yes

Previous Prime: 71993

Next Prime: 72019

Digit Sum: 35

Digital Root: 8

Palindrome: No

Factorization: 71999

Divisors: 1, 71999

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001100100111111

Octal: 214477

Duodecimal: 357BB

Hexadecimal: 1193f

Square: 5183856001

Square Root: 268.3262939035234

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

Least prime in A031938 (lesser of primes differing by 20) whose distance to the next 20-twin is 6·n. A52359

a(n) is the smallest number m such that m-k is product of k+1 primes for k=0,1,2,...,n. A93552

Primes p such that p's set of distinct digits is {1,7,9}. A108384

Primes containing 999 as a substring. A167292

Middle of 3 consecutive prime numbers, p1, p2, p3, such that p1·p2·p3·d1·d2 = average of twin prime pairs; d1 (δ) = p2 - p1, d2 (δ) = p3 - p2. A153410

a(n) = 80·n² - 1. A158774

a(n) = ∑_i=1..n-1(i^n-2) mod n⁴. A284760

Primes of the form 2^a * 3^b * 5^c - 1 for positive a, b, c. A293425

Primes of the form 9n³-1. A200960

Primes of the form 5n² - 1. A201783