Properties of the Number 250

Two Hundred Fifty

Basics

Value: 249 → 250 → 251

Parity: even

Prime: No

Previous Prime: 241

Next Prime: 251

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 2 × 5 ³

Divisors: 1, 2, 5, 10, 25, 50, 125, 250

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 11111010

Octal: 372

Duodecimal: 18A

Hexadecimal: fa

Square: 62500

Square Root: 15.811388300841896

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: Yes

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

Primorial base exp-function: digits in primorial base representation of n become the exponents of successive prime factors whose product a(n) is. A276086

The Doudna sequence: write n-1 in binary; power of prime(k) in a(n) is # of 1's that are followed by k-1 0's. A5940

a(n) = sigma₂(n): sum of squares of divisors of n. A1157

a(n) = prime(n) - 1. A6093

a(0)=1. a(n) = p(A000120(n)) * ∏_{m=1..A000120(n)} p(m)^A163510(n,m), where p(m) is the m-th prime. A163511

Numbers k such that k² + 1 is prime. A5574

Numbers whose prime indices are inseparable. A335448

Numbers that are products of 4 primes. A14613

Numbers that are the sum of 2 positive cubes. A3325

Numbers that contain a digit 0. A11540

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