perplexus.info :: Numbers : Change the First Digit, Get Three Primes

Change the First Digit, Get Three Primes (Posted on 2023-07-17)

A 5-digit base-N prime number P is such that we will obtain three other prime numbers by changing its first digit.

Determine the minimum value of N.

Submitted by K Sengupta

Rating: 5.0000 (1 votes)

Solution: (Hide)

Finds that 6 is the minimum value for N. Starting with 10001 (decimal 1297), the extra three are 20001, 30001 and 50001.
For an explanation, refer to the solution submitted by Charlie in this location.

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
computer solution	Charlie	2023-07-17 09:58:15
Solution	Larry	2023-07-17 09:36:55

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