Wolfram Demonstrations Project
8847

Square Spiral for a Given Number of Divisors

Ulam marked the primes by counting along a square spiral. This Demonstration generalizes that to show the numbers with a given number of divisors along the spiral.

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This extends the Demonstration Primality Bit Spiral.

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"Square Spiral for a Given Number of Divisors" from the Wolfram Demonstrations Project
 http://demonstrations.wolfram.com/SquareSpiralForAGivenNumberOfDivisors/
Contributed by: Michael Schreiber and George Beck
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