Properties of the Number 73121

Seventy-Three Thousand One Hundred Twenty-One

Basics

Value: 73120 → 73121 → 73122

Parity: odd

Prime: Yes

Previous Prime: 73091

Next Prime: 73127

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 73121

Divisors: 1, 73121

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001110110100001

Octal: 216641

Duodecimal: 36395

Hexadecimal: 11da1

Square: 5346680641

Square Root: 270.4089495560382

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

Numbers that are the sum of 6 nonzero 8th powers. A3384

Primes where the first digit equals the sum of all the other digits. A156307

Primes 8k + 1 preceding the maximal gaps in A269424. A269425

a(1) = a(2) = a(3) = 1; for n>3, a(n) = a(n-1) + a(n-2) + a(n-3) iff n-1 is prime, otherwise a(n) = a(n-1) + 1. A113057

Smallest prime that begins with the digit reversal of prime(n). A93487

The sequence gives prime numbers formed from the sum of the squares of composite numbers and the corresponding prime numbers. A180233

G.f.: A(x) = 1+x*(1+x*(1+x*(...(1+x*(...)ⁿ)...)³)²)¹. A95793

a(n) = r·a(ceiling(n/2)) + s·a(floor(n/2)) with a(1)=1 and (r,s)=(2,2). A73121