perplexus.info :: Just Math : Prime Birthdays

Prime Birthdays (Posted on 2005-03-23)

Assuming a lifespan of 80 years, in what years of the 20th and 21st centuries (1900-1999), (2000-2099) would you have to be born to have the maximum number of prime birthdays in a prime year?

In what years of the same time spans would you have to be born to have the minimum number of prime birthdays in a prime year?

You may assume that people born on Feb. 29 in a leap year still celebrate their birthdays each following year.

Submitted by Erik O.

Rating: 3.0000 (2 votes)

Solution: (Hide)

Charlie provides an excellent answer to the problem here.

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

Subject	Author	Date
Puzzle Answer	K Sengupta	2023-10-28 10:46:03
computer enumeration--spoiler	Charlie	2005-03-23 20:35:17

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