Properties of the Number 11951

Eleven Thousand Nine Hundred Fifty-One

Basics

Value: 11950 → 11951 → 11952

Parity: odd

Prime: No

Previous Prime: 11941

Next Prime: 11953

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 17 × 19 × 37

Divisors: 1, 17, 19, 37, 323, 629, 703, 11951

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10111010101111

Octal: 27257

Duodecimal: 6ABB

Hexadecimal: 2eaf

Square: 142826401

Square Root: 109.32062934323055

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

Composite numbers n such that bⁿ⁺¹ == 1 (mod n) for every b coprime to n. A208728

Multiples of 19 containing a 19 in their decimal representation. A121039

Numbers k such that σ(k) = σ(k+12). A15882

Numbers k such that 2^k+1 == 1 (mod k). A187787

Numbers n such that the digits of σ(n) are exactly the same (albeit in different order) as the digits of φ(n), in base 10. A175795

Fourth column of (1,5)-Pascal triangle A096940. A96941

Chebyshev pseudoprimes to base 2: composite numbers k such that T(k, 2) == 2 (mod k), where T(k, x) is the k-th Chebyshev polynomial of the first kind. A330206

Composite integers m such that A003500(m) == 4 (mod m). A335673

Value of y in the Diophantine equation x³ + y³ = n·z³ (with x>0 and minimal and x >= y and y ≠ 0). A190580

17 times triangular numbers. A195037