Merge Prime

Computer Science Level 4

We define a merge prime as a prime number that can be split into two prime numbers.

Some examples of merge primes are:

  • 73 because 7 and 3 are both prime numbers.
  • 373 because 37 and 3 are both prime numbers.

What are the last three digits of the sum of all 7-digit merge primes?


  • \(9998903\) is a merge prime because \(99989\) and \(3\) are primes.

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