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Binary Primes (Posted on 2004-02-18)

How many primes, written in usual base 10, have digits that are alternating 1s and 0s, beginning and ending with one?

For example (not necessarily prime):
1, 101, 10101, ...

See The Solution Submitted by Aaron

Rating: 3.5000 (2 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)

It's me again adding to my previous entry

| Comment 7 of 13 |

I forgot to mention that it depends on the highest number you're willing to go to find the number of prime numbers. Now I am done.

Posted by Mitch Mullings on 2004-02-22 20:57:19

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