prime number challenge

08072016, 12:30 AM
Post: #1




prime number challenge
I see in the newspaper today that Amazon Prime Air's first aircraft has a tail number that contains a "prime" number, 1997. I wonder how Amazon staff verified that 1997 is prime. Perhaps they called some geek on this forum!
After I retired a few years ago, I needed a parttime job while I was attending university to get my teaching degree so I could become a math teacher. I signed up with Beeline Courier Service, which was a barrel of fun driving around the city picking up and delivering things. Every courier had a 4digit courier number that was used to identify him/her on the twoway radio. My assigned 4digit courier number ending in 41 was a prime number. I eventually resigned from the courier job but returned a couple of years later and my new courier number was exactly 700 more than my first courier number, again ending in 41, and it was a prime number also. My first courier number was the first 4digit number (first digit can't be 0) ending in 41 that is prime. What was my first courier number and my second courier number? Prize for the person with the first correct answer: an "attaboy." 

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Messages In This Thread 
prime number challenge  Don Shepherd  08072016 12:30 AM
RE: prime number challenge  Gerson W. Barbosa  08072016, 04:36 AM
RE: prime number challenge  Don Shepherd  08072016, 04:44 AM
RE: prime number challenge  Gerson W. Barbosa  08072016, 05:24 AM
RE: prime number challenge  Paul Dale  08072016, 05:53 AM
RE: prime number challenge  Gerson W. Barbosa  08072016, 11:56 AM
RE: prime number challenge  Paul Dale  08072016, 12:22 PM
RE: prime number challenge  Gerson W. Barbosa  08072016, 04:29 PM
RE: prime number challenge  Massimo Gnerucci  08072016, 05:40 PM
RE: prime number challenge  Paul Dale  08072016, 09:57 PM
RE: prime number challenge  Gerson W. Barbosa  08072016, 11:11 PM
RE: prime number challenge  TASP  08082016, 04:15 PM
RE: prime number challenge  Claudio L.  08082016, 04:56 PM
RE: prime number challenge  TASP  08082016, 06:29 PM
RE: prime number challenge  EdS2  08142016, 05:14 PM

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