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Math Quote by Paul Erdos

“I'll tell you once, and I'll tell you again. There's always a prime between n and 2n.” quote by Paul Erdos
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“I'll tell you once, and I'll tell you again. There's always a prime between n and 2n.”

Paul Erdos

About This Quote

Source Paper: Elementary Number Theory, 1930s

There is always at least one prime number between any integer n and its double 2n.

In simple terms: A prime exists between n and 2n.

Key Takeaway

Recognize the density of primes.

Themes

mathematics number theory prime numbers

Mood

analytical curious

Type

educational mathematical

When to use this quote

  • Teaching number theory
  • solving math puzzles
  • cryptography
  • educational lectures

Key Concepts

Prime distribution Bertrand's postulate

Questions to Reflect On

  • How does this property affect prime searching algorithms?
  • What implications does it have for cryptographic key generation?
A Different Perspective

Only holds for n > 1; small n may need verification.

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