Properties of the Number -100172

One Hundred Thousand One Hundred Seventy-Two

Basics

Value: -100173 → -100172 → -100171

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 79 × 317

Divisors: 1, 2, 4, 79, 158, 316, 317, 634, 1268, 25043

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4938 Try Today's Challenge

Representations

Binary: -11000011101001100

Octal: -303514

Duodecimal: -49B78

Hexadecimal: -1874c

Square: 10034429584

Square Root: 316.49960505504583

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 times the digit 9 appears in the first 10ⁿ digits of Catalan's constant. A224818

Numbers k such that 210·k+{11, 13, 17, 19, 23, 29} are 6 consecutive primes. A182282

Numbers k such that 210·k+{11,13,17,19,23,29,31} are 7 consecutive primes. A182387

Number of acute triangles, distinct up to congruence, on an n X n grid (or geoboard). A190021

Numbers <= 10⁶ with valid Luhn mod 10 check digit, sorted lexicographically. A249854

Numbers n such that 2 * (1ⁿ + 2ⁿ + 3ⁿ + ... + nⁿ) is not 0 (mod n), but 2 * (1^d + 2^d + 3^d + ... + d^d) is 0 (mod d) for each other d | n. A280187

G.f. A(x) satisfies -2 = ∑_n=-oo..+oo (-1)ⁿ * x^2·n+1 * (1 + xⁿ)ⁿ⁺¹ * A(x)ⁿ. A382322

Numbers k such that k | sigma₁₃(k) - φ(k)¹³. A55707

s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (Lucas numbers), t = A001950 (upper Wythoff sequence). A25095