Properties of the Number 80185

Eighty Thousand One Hundred Eighty-Five

Basics

Value: 80184 → 80185 → 80186

Parity: odd

Prime: No

Previous Prime: 80177

Next Prime: 80191

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 × 7 × 29 × 79

Divisors: 1, 5, 7, 29, 35, 79, 145, 203, 395, 553

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011100100111001

Octal: 234471

Duodecimal: 3A4A1

Hexadecimal: 13939

Square: 6429634225

Square Root: 283.16956051101255

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

Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,3,2. A37681

Numbers k such that (2^k-1)^k == 1 (mod (2^k+1)*k²) and 2^k-1 ≠ 1 (mod k). A384148

a(n) = floor( exp(11/16)*n! ). A30902

Composite numbers n such that E(n+1)+1 is divisible by n, where E(n) is the n-th Euler number (A122045). A287934

Square table, read by antidiagonals, where row e.g.f.s, R(n,x), satisfy: d/dx log( R(n,x) )/n = R(n+1,x) with R(n,0) = 1; that is, the logarithmic derivative of the e.g.f. of row n, divided by n, equals the e.g.f. of row n+1, for n>=1. A145080

Primes p such that 5 is the largest of all prime factors of the numbers between p and the next prime (cf. A052248). A80185