Properties of the Number 20411

Twenty Thousand Four Hundred Eleven

Basics

Value: 20410 → 20411 → 20412

Parity: odd

Prime: Yes

Previous Prime: 20407

Next Prime: 20431

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 20411

Divisors: 1, 20411

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100111110111011

Octal: 47673

Duodecimal: B98B

Hexadecimal: 4fbb

Square: 416608921

Square Root: 142.86707108357754

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

Smallest prime p==3 (mod 8) such that Q(sqrt(-p)) has class number 2n+1. A2148

Primes of the form 3^k + 3^m - 1, where k and m are positive integers. A234346

T(n,k)=Number of nXk 0..4 arrays with each element·equal to the number of its horizontal and vertical neighbors equal to 2,3,1,1,0 for x=0,1,2,3,4. A197503

a(n) = n³ + n² - 1. A3777

Primes of the form 4·k-1 such that 8·k-1 and 16·k-1 are also primes. A101791

Triangle, read by rows, where row n forms a polynomial in y=2·k that generates diagonal n as k=0,1,2,... for n>=0; thus T(n,k) = ∑_j=0..n-k T(n-k,j)*(2·k)^j, with T(n,0)=T(n,n)=1. A113711

Primes p such that p = q² + 2·r² where q and r are also primes. A260553

Primes p such that 2p+1, 4p+3, 6p+5 are all primes. A107020

Numbers n such that the last 9 decimal digits of the n-th Fibonacci number is pandigital 1-9. A112371

Primes in A065387 in the order of their appearance. A229264