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691 is a prime number from 601-700. 691 has 2 factors, 1 and 691. It is the 125th prime number, and the sixteenth and last prime number from 601-700. 
691

Proofs

  • Yes — 691 can be divided by 1.
  • No — 691 cannot be divided by 2-690.
  • Yes — 691 can be divided by 691.

Relationship with other odd numbers

The numbers before

  • The previous prime number is 683.
    • 689 is a composite number, being the product of 13 and 53.
  • The previous prime number before 683 is 677.
    • 679 is a composite number, being the product of 7 and 97.

The numbers after

  • The next prime number is 701.
    • 697 is a composite number, being the product of 17 and 41.
  • 709 is the next prime number after 701.
    • 703 is a composite number, being the product of 19 and 37.
    • 707 is a composite number, being the product of 7 and 101.

Trivia

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