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Primorial Penultimate Piece (Posted on 2022-06-14) Difficulty: 3 of 5
Primorials are like Factorials except that only the prime numbers are multiplied:
2, 6, 30, 210, 2310, 30030, ...

Starting with the first primorial which is at least two digits, consider a sequence composed of the second to last digit of each primorial:
3, 1, 1, 3 ...
The first digit of this sequence is '3'.

Please provide the 999th and 9999th digits of this sequence.

No Solution Yet Submitted by Larry    
Rating: 5.0000 (1 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
re: computer solution (confirmation)Jer2022-06-14 18:55:36
Solutioncomputer solutionCharlie2022-06-14 11:19:53
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