Properties of the Number -100215

One Hundred Thousand Two Hundred Fifteen

Basics

Value: -100216 → -100215 → -100214

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 17 × 131

Divisors: 1, 3, 5, 9, 15, 17, 45, 51, 85, 131

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -11000011101110111

Octal: -303567

Duodecimal: -49BB3

Hexadecimal: -18777

Square: 10043046225

Square Root: 316.5675283411108

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

T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 1 0 1 vertically. A208039

Odd numbers that are not of the form p + 2^a + 2^b with b > a > 0, and p prime. A268693

Smallest k whose 'Reverse and Subtract' trajectory has a preperiodic part of length n. A72138

Starting term of the smallest n-chain of numbers whose squares are permutations of the same digits. A85546

(k²)-th k-smooth number for k = prime(n). A133581

Number of nX7 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 1 0 1 vertically. A208038

Number of 4 X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 1 0 1 vertically. A208040

Numbers k such that 477·2^k+1 is prime. A319487

Least number that requires n steps to reach 0 by repeated application of f: x -> abs(x - reverse(x)). A109891