Properties of the Number 15105

Fifteen Thousand One Hundred Five

Basics

Value: 15104 → 15105 → 15106

Parity: odd

Prime: No

Previous Prime: 15101

Next Prime: 15107

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 19 × 53

Divisors: 1, 3, 5, 15, 19, 53, 57, 95, 159, 265

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11101100000001

Octal: 35401

Duodecimal: 88A9

Hexadecimal: 3b01

Square: 228161025

Square Root: 122.90240030202827

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 k and k+1 have 4 distinct prime factors. A140078

a(n) is the concatenation of n and 7n. A9441

Numbers k such that k and k+1 each have at least 4 distinct prime factors. A321504

Numbers k such that k and k+1 are the product of exactly four distinct primes. A318896

G.f.: q-sinh(x) evaluated at q=-x. A198202

Rectangular array A(n, k) = hypergeom([-k, k + n/2 - 1], [1], -4) with row n >= 0 and k >= 0, read by ascending antidiagonals. A300945

Primitive elements of A119432. A119433

Average of terms in n-th row of A077529. A77532

Number of nonprime parts in the last section of the set of partitions of n. A144121

Row sums of triangle A145364 (S1hat(-2)) and partition array A145363 (M31hat(-2)). A145365