Properties of the Number 71261

Seventy-One Thousand Two Hundred Sixty-One

Basics

Value: 71260 → 71261 → 71262

Parity: odd

Prime: Yes

Previous Prime: 71257

Next Prime: 71263

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 71261

Divisors: 1, 71261

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001011001011101

Octal: 213135

Duodecimal: 352A5

Hexadecimal: 1165d

Square: 5078130121

Square Root: 266.9475603934226

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

Greatest prime factor of n⁵ + 1. A240548

Primitive prime factors of the cyclotomic polynomial sequence φ(10,k) in the order in which they occur. A248874

Expansion of ∏_k>=1 (1 - x^k/(1 - x)). A307599

Primes p of the form p = A161671(k) = A161671(k+1). A220220

Numerators of continued fraction convergents to sqrt(396). A41752

a(n) is the smallest lesser twin prime p from A001359 such that the distance to the previous lesser twin prime is 6·n. A340573

Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1000-1111-0010-0010 pattern in any orientation. A147173

Smallest k such that |p(k)-c(k)| is an n-digit number where p(k) is the k-th prime and c(k) is the k-th composite number. A71261