Properties of the Number 15215

Fifteen Thousand Two Hundred Fifteen

Basics

Value: 15214 → 15215 → 15216

Parity: odd

Prime: No

Previous Prime: 15199

Next Prime: 15217

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 5 × 17 × 179

Divisors: 1, 5, 17, 85, 179, 895, 3043, 15215

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11101101101111

Octal: 35557

Duodecimal: 897B

Hexadecimal: 3b6f

Square: 231496225

Square Root: 123.34909809155477

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

Numbers k such that 6·k+1, 6·k+7, 6·k+13, 6·k+19 are consecutive primes. A90839

T(n,k)=Number of nXk nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors. A208581

Numbers n such that 6n+5, 6n+11, 6n+17, 6n+23 are consecutive primes or 6n+1, 6n+7, 6n+13, 6n+19 are consecutive primes. A90833

a(n) = floor(n²/3 + n³/2). A390565

Expansion of (x²-x-1)*(x³-x²+x-2) / ((x-1)*(2·x-1)*(x²+x+1)*(x²+1)). A109784

Number of nX3 nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors. A208578

Number of odd parts in the partitions of n into 7 parts. A309622

Binomial transform of A007318 (Pascal's triangle by rows). A106462

Number of 3Xn nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors. A208583

Duplicate of A090839. A296055