Properties of the Number 12541

Twelve Thousand Five Hundred Forty-One

Basics

Value: 12540 → 12541 → 12542

Parity: odd

Prime: Yes

Previous Prime: 12539

Next Prime: 12547

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 12541

Divisors: 1, 12541

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 11000011111101

Octal: 30375

Duodecimal: 7311

Hexadecimal: 30fd

Square: 157276681

Square Root: 111.9866063420086

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

Least k such that ∑_i=1..k (prime(i) + prime(i+2) - 2·prime(i+1)) = 2n + 1. A73051

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted then there are a pair of central terms both equal to 10. A31423

Value of D for incrementally largest values of minimal·satisfying Pell equation x²-Dy²=1. A33316

Numbers k such that the k-th maximal run of composite numbers has length different from all prior maximal runs. Sorted positions of first appearances in A176246 (or A046933 shifted). A373400

Mountain primes. A134951

Primes p such that the multiplicative order of 2 modulo p is (p-1)/5. A1135

Mother primes of order 9. A136068

Primes for which the weight as defined in A117078 is 23. A119504

a(n) = a(n-1) + a(n-2) + 2 where a(0) = a(1) = 1. A111314

Primes of the form (4·n²-8·n-9)/3. A154616