Properties of the Number 20261

Twenty Thousand Two Hundred Sixty-One

Basics

Value: 20260 → 20261 → 20262

Parity: odd

Prime: Yes

Previous Prime: 20249

Next Prime: 20269

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 20261

Divisors: 1, 20261

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100111100100101

Octal: 47445

Duodecimal: B885

Hexadecimal: 4f25

Square: 410508121

Square Root: 142.3411395205195

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

Magnanimous primes: primes with the property that inserting a "+" in any place between two digits yields a sum which is prime. A89392

Number of strict compositions of n whose non-adjacent parts are strictly decreasing. A333150

Smallest n-digit magnanimous prime (A089392), or 0 if there is no such prime with n digits. A89393

Prime time primes on 6-digit clocks, second definition: primes of the form HMMSS where H, MM, SS are primes, H < 24, MM and SS < 60. A295013

Smallest prime divisor of n-th primorial + (n+1)-st prime. A65315

Primes and their indices such that when their respective SOD's are both prime, the SOD of the index is the nextprime of the prime SOD. A117458

Primes p such that continued fraction of (1 + sqrt(p))/2 has period 17 : primes in A146340. A146362

Round(1000·x), where·is the solution to x = 3^n-x. A103537

Primes whose base-7 representation also is the base-4 representation of a prime. A235617

Primes congruent to 24 mod 59. A142751