Properties of the Number 30125

Thirty Thousand One Hundred Twenty-Five

Basics

Value: 30124 → 30125 → 30126

Parity: odd

Prime: No

Previous Prime: 30119

Next Prime: 30133

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 5 ³ × 241

Divisors: 1, 5, 25, 125, 241, 1205, 6025, 30125

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111010110101101

Octal: 72655

Duodecimal: 15525

Hexadecimal: 75ad

Square: 907515625

Square Root: 173.5655495770978

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

a(n) = ceiling(∑_i=1..n-1 a(i)/4) for n >= 2 starting with a(1) = 1. A120160

a(n) = a(n-1)+a(n-4). A14097

G.f.: ∑_k>=0 x^k * ∏_j=1..6·k (1 + x^j)/(1 - x^j). A385092

Square array A(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of continued fraction 1/(1 - k·x/(1 - k·x²/(1 - k·x³/(1 - k·x⁴/(1 - k·x⁵/(1 - ...)))))). A286933

Look at the first 10 digits of the sequence: they are all different. The same for the next 10. And the next 10, etc. This sequence is the slowest increasing one with that property. A97912

a(n) = A113166(n) - Fibonacci(n-1), where Fibonacci(n) = A000045(n). A113486

Decimal expansion of Lehmer's constant. A30125

Expansion of g.f. A(x) satisfying A( x*(1 + 2·x)*A(x) )³ = A( x*(1 + 3·x)*A(x)² )². A370537

Expansion of g.f. A(x) = G( x*(1 + 2·x)*G(x) )^1/2 = G( x*(1 + 3·x)*G(x)² )^1/3, where G(x) is the g.f. of A370537. A370538