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GMAT 考满分题库

- 数学PS -
Fermat primes are prime numbers that can be written in the form {2}^{k}+{1}, where k is an integer and a power of 2. Which of the following is NOT a Fermat prime
  • A3
  • B5
  • C17
  • D31
  • E257
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正确答案: D

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