Properties of the Number 73129

Seventy-Three Thousand One Hundred Twenty-Nine

Basics

Value: 73128 → 73129 → 73130

Parity: odd

Prime: No

Previous Prime: 73127

Next Prime: 73133

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 7 × 31 × 337

Divisors: 1, 7, 31, 217, 337, 2359, 10447, 73129

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001110110101001

Octal: 216651

Duodecimal: 363A1

Hexadecimal: 11da9

Square: 5347850641

Square Root: 270.42374156127636

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

a(n) = ∑_{k=0..floor(n/2)} binomial(n-k, k-1) * 3^k-1. A99579

Consecutive states of the linear congruential pseudo-random number generator (421·s + 17117) mod 81000 when started at s=1. A385338

Triangle, read by rows, T(n,k) = ∑_j=1..k binomial(n-1, j-1)*binomial(k, j - 1)*(j-1)!. A176122

a(n) = n² + 1. A2522

Central polygonal numbers (the Lazy Caterer's sequence): n(n+1)/2 + 1; or, maximal number of pieces formed when slicing a pancake with n cuts. A124

a(n) = 3·a(n-1) - a(n-2) for n >= 2, with a(0) = a(1) = 1. A1519

a(n) = 4·a(n-1) - a(n-2) with a(0) = 0, a(1) = 1. A1353

Bisection of Lucas numbers: a(n) = L(2·n) = A000032(2·n). A5248

a(0) = 1, a(1) = 2, a(n) = 4·a(n-1) - a(n-2). A1075

a(n) = 4·a(n-1) - a(n-2), with a(0) = 1, a(1) = 1. A1835