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Of all the prime numbers between 10 and 10,000, which ending digits (1, 3, 7, 9) occurs the most frequently? Any help would be greatly appreciated. Thank you.

 May 15, 2019
 #1
avatar+5074 
+1

deleted - see below

 
 May 15, 2019
edited by Rom  May 15, 2019
 #2
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+1

Rom: I get slightly different count. There are 1,225 Primes between 10 and 10,000:

 

1 = 306, 3 = 309,
7 = 307, 9 = 303
Total =1,225 

 
 May 15, 2019
 #3
avatar+5074 
+1

I'm showing 2 as the first prime and 9973 as the 1229th prime.

 

10007 is the 1230th prime.

 

Oh, my bad... between 10 and 10000... blah

 

I get 

 

(1,3,5,7) = (306,309,307,303)

 

as you did.  Righto then.

 
Rom  May 15, 2019
edited by Rom  May 15, 2019

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