Math1089

Mathematics for All

Towards Math

  • 31 is a prime
  • 331 is a prime
  • 3331 is a prime
  • 33331 is a prime
  • 333331 is a prime
  • 3333331 is a prime
  • 33333331 is a prime

But what about 33333331? Is it a prime?

It turns out not to be, because we have

17 × 19607843 = 33333331

It follows that we can never trust a pattern just because it looks like it might continue!

Pages: Page 1, Page 2, Page 3, Page 4, Page 5, Page 6, Page 7, Page 8, Page 9, Page 10, Page 11, Page 12, Page 13, Page 14, Page 15, Page 16, Page 17, Page 18, Page 19, Page 20, Page 21, Page 22, Page 23

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