Properties of the Number 141

One Hundred Forty-One

Basics

Value: 140 → 141 → 142

Parity: odd

Prime: No

Previous Prime: 139

Next Prime: 149

Digit Sum: 6

Digital Root: 6

Palindrome: Yes

Factorization: 3 × 47

Divisors: 1, 3, 47, 141

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001101

Octal: 215

Duodecimal: B9

Hexadecimal: 8d

Square: 19881

Square Root: 11.874342087037917

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

Semiprimes (or biprimes): products of two primes. A1358

Palindromes in base 10. A2113

Squarefree semiprimes: Numbers that are the product of two distinct primes. A6881

Numbers in base 5. A7091

a(n) = 3·n. A8585

Central trinomial coefficients: largest coefficient of (1 + x + x²)ⁿ. A2426

Lucky numbers. A959

a(n) = 4·n + 1. A16813

Upper Wythoff sequence (a Beatty sequence): a(n) = floor(n*φ²), where φ = (1+sqrt(5))/2. A1950

Numbers k such that the k-th composition in standard order is an anti-run (no adjacent equal parts). A333489

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