Properties of the Number 11983

Eleven Thousand Nine Hundred Eighty-Three

Basics

Value: 11982 → 11983 → 11984

Parity: odd

Prime: No

Previous Prime: 11981

Next Prime: 11987

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 23 × 521

Divisors: 1, 23, 521, 11983

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10111011001111

Octal: 27317

Duodecimal: 6B27

Hexadecimal: 2ecf

Square: 143592289

Square Root: 109.4668899713516

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) = floor(n*φ¹³), where φ is the golden ratio, A001622. A4928

Sum of the squarefree parts of the partitions of n into 4 parts. A309479

T(n,k)=Number of nXk 0..2 arrays with no element unequal to a strict majority of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards. A279871

Row 4 of table A162424. A162427

Number of cubic bicolored graphs on n unlabeled nodes admitting an automorphism exchanging the colors. A840

n for which A079277(n) + φ(n) < n. A208815

Total sum of parts of multiplicity 2 in all partitions of n. A117525

a(n) = ∑_{j=1..prime(n)-1} floor(j²/prime(n)). A165993

a(n) = a(n-1) + a(n-2) + a([n/2]), where a(0) = 1, a(1) = 2, a(2) = 3. A298339

a(n) = A000265(3*(a(n-1) + a(n-2))/2 + 1) starting at a(1)=1, a(2)=11. A124139