# easy number problem...

rubberjaw30
Posers and Puzzles 10 Feb '07 16:24
1. 10 Feb '07 16:24
2. 10 Feb '07 16:25
whoops, hold on...
accidentally hit post...
havent gotten the problem up yet...
3. 10 Feb '07 16:26
finish the next ten digits of the pattern
98, 97, 95, 93, 89, 87, 83, 81, 77, 71, 69
4. 10 Feb '07 17:54
Originally posted by rubberjaw30
finish the next ten digits of the pattern
98, 97, 95, 93, 89, 87, 83, 81, 77, 71, 69
67?
5. 10 Feb '07 20:52
Originally posted by mazziewag
67?
nope...
its a little more challenging than id originally anticipated now that i think about it...
6. 11 Feb '07 10:29
Originally posted by rubberjaw30
nope...
its a little more challenging than id originally anticipated now that i think about it...
70?
7. 11 Feb '07 15:28
63?
8. 11 Feb '07 16:40
63, 59, 57, 53, 47, 41, 39, 33, 29, 27, 21, 17, 11, 3

if it is a series of 100-prime
9. 11 Feb '07 23:01
Originally posted by aging blitzer
63, 59, 57, 53, 47, 41, 39, 33, 29, 27, 21, 17, 11, 3

if it is a series of 100-prime
good job...
didnt think itd be that easy
10. 12 Feb '07 20:36
Wait.. I thought of that at first.. but threw the option out because most of the numbers in the series aren't prime... 98, 87.. etc.
11. 12 Feb '07 21:20
Is there a pattern for prime numbers that are the next perfect square minus a prime?

1 is not (as it is not a prime although 4-3 would be what I was talking about)
2 is 4-2
7 is 9-2
23 is 25-2
47 is 49-2
79 is 81-2

Does this pattern continue forever? Can it be proven?
12. 13 Feb '07 16:01
Nope, not a pattern

12^2 = 144... 142 is not prime.
13. 14 Feb '07 02:22
Originally posted by Obese
Wait.. I thought of that at first.. but threw the option out because most of the numbers in the series aren't prime... 98, 87.. etc.
the series is 100 minus primes in order of increasing numbers...
98 (100 minus 2)
87 (100 minus 13)
14. TheMaster37
Kupikupopo!
14 Feb '07 07:22
Originally posted by Obese
Nope, not a pattern

12^2 = 144... 142 is not prime.
Minus A prime.
15. TheMaster37
Kupikupopo!
14 Feb '07 07:27
Originally posted by Gastel
Is there a pattern for prime numbers that are the next perfect square minus a prime?

1 is not (as it is not a prime although 4-3 would be what I was talking about)
2 is 4-2
7 is 9-2
23 is 25-2
47 is 49-2
79 is 81-2

Does this pattern continue forever? Can it be proven?
2 is 4-2
7 is 9-2

11 is 16-5
5 is 16-11

23 is 25-2

19 is 36-17
17 is 36-19

47 is 49-2

41 is 64-23
23 is 64-41

79 is 81-2

You skipped a few squares.