Properties of the Number 15955

Fifteen Thousand Nine Hundred Fifty-Five

Basics

Value: 15954 → 15955 → 15956

Parity: odd

Prime: No

Previous Prime: 15937

Next Prime: 15959

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 5 × 3191

Divisors: 1, 5, 3191, 15955

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11111001010011

Octal: 37123

Duodecimal: 9297

Hexadecimal: 3e53

Square: 254562025

Square Root: 126.31310304160847

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

Number of n-lobsters. A130131

Numbers k such that 6^k - 5 is prime. A59614

Conjecturally, number of infinitely-recurring prime patterns on n consecutive integers. A23192

Number of partitions that are "3-close" to being self-conjugate. A108962

a(n) = ∑_k=0..n binomial(n,k) * binomial(2·n+4·k,k). A388727

Convolution of A007054 (Super ballot numbers) with A000302 (powers of 4). A38679

Numbers k such that 2·10^k+9 is prime. A101392

Numbers n such that 4·10ⁿ + 7·R_n - 6 is prime, where R_n = 11...1 is the repunit (A002275) of length n. A102995

Triangular matrix T, read by rows, that satisfies: [T^-1](n,k) = -(k+1)*T(n-1,k) when (n-1)>=k>=0, with T(n,n) = 1 and T(n+1,n) = (n+1) for n>=0. A106208

Number of 2X3 integer matrices with each row summing to zero, row elements in nondecreasing order, rows in lexicographically nondecreasing order, and the sum of squares of the elements <= 2·n² (number of collections of 2 zero-sum 3-vectors with total modulus squared not more than 2·n², ignoring vector and component permutations). A192698