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#26 2014-01-03 17:05:53

bobbym
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From: Bumpkinland
Registered: 2009-04-12
Posts: 87,238

Re: Prime Number Challenges


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#27 2014-01-03 17:08:19

mathaholic
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From: Juliania
Registered: 2012-11-29
Posts: 2,845
Website

Re: Prime Number Challenges

No, right?

21. Back to normal! 89 + 2 = p25 - 6 = ?

22. p18 - p4 = ?

Last edited by mathaholic (2014-01-03 17:08:37)


"Double the fun, double the thrill, double the coolness" - Julianthewiki

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#28 2014-01-03 17:13:58

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 87,238

Re: Prime Number Challenges

No is correct for 19 - 20.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#29 2014-01-03 18:26:38

mathaholic
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From: Juliania
Registered: 2012-11-29
Posts: 2,845
Website

Re: Prime Number Challenges

For 21: 91.

22. 61 - 7 = 54.

23. Is 2:17 prime?


"Double the fun, double the thrill, double the coolness" - Julianthewiki

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#30 2014-01-03 20:12:18

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 87,238

Re: Prime Number Challenges

What is 2:17?


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#31 2014-01-03 20:45:33

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,845
Website

Re: Prime Number Challenges

Logic hint: Convert it to seconds, and then answer is it prime?


"Double the fun, double the thrill, double the coolness" - Julianthewiki

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#32 2014-01-03 21:06:58

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 87,238

Re: Prime Number Challenges


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#33 2014-01-03 22:21:03

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,845
Website

Re: Prime Number Challenges

137 is prime.

Next questions tomorrow


"Double the fun, double the thrill, double the coolness" - Julianthewiki

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#34 2014-01-03 22:27:57

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 87,238

Re: Prime Number Challenges

Hi mathaholic;

I will be here, same bat time, same bat channel.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#35 2014-01-04 12:50:58

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,845
Website

Re: Prime Number Challenges

I mean in my time.

23 should have been 24, lol.

25. What is 1/4 of p16?

26. How many hours are there in 67 days?


"Double the fun, double the thrill, double the coolness" - Julianthewiki

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#36 2014-01-04 13:33:23

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 87,238

Re: Prime Number Challenges


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#37 2014-01-04 13:48:19

Agnishom
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From: The Complex Plane
Registered: 2011-01-29
Posts: 17,175
Website

Re: Prime Number Challenges

mathaholic wrote:

Logic hint: Convert it to seconds, and then answer is it prime?

bobbym does not like Logic


'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'
'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'
'You have made another human being happy. There is no greater accomplishment.' -bobbym

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#38 2014-01-04 13:49:54

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 87,238

Re: Prime Number Challenges

Oooga chaga, ooga chaga, ooga ooga chaga...

That is true. Boole was a nut too.

Same bat time, same bat channel.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#39 2014-01-04 13:59:46

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,845
Website

Re: Prime Number Challenges

Sorry bobbym.

Now, what is the answer to the questions?


"Double the fun, double the thrill, double the coolness" - Julianthewiki

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#40 2014-01-04 14:01:43

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 87,238

Re: Prime Number Challenges

That is a joke. Your questions are fine. The questions have already been answered and I must leave now.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#41 2014-01-04 19:36:14

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,845
Website

Re: Prime Number Challenges

27. What is p14 - p4?
28. What is p29 - 52?


"Double the fun, double the thrill, double the coolness" - Julianthewiki

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#42 2014-01-04 21:32:12

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 87,238

Re: Prime Number Challenges


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#43 2014-01-04 22:00:02

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,845
Website

Re: Prime Number Challenges

Okay.

29. What is p19 - p3[sup]2[/sup]?
30. What is the square root of the largest known prime number?


"Double the fun, double the thrill, double the coolness" - Julianthewiki

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#44 2014-01-04 22:11:47

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 87,238

Re: Prime Number Challenges


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#45 2014-01-07 20:25:01

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,845
Website

Re: Prime Number Challenges

Unbelievable answer for 30.

31. What is p222 - p199?
32. What is the square root of the above?


"Double the fun, double the thrill, double the coolness" - Julianthewiki

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#46 2014-01-07 21:34:33

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 87,238

Re: Prime Number Challenges

Hi;

The largest known prime has 17425170 digits. Now is it believable?


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#47 2014-01-07 21:52:02

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,845
Website

Re: Prime Number Challenges

I know that. As in the square root.

33. Square p33.
34. Square p1 6 times.


"Double the fun, double the thrill, double the coolness" - Julianthewiki

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#48 2014-01-07 21:55:54

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 87,238

Re: Prime Number Challenges

The square root will have roughly half as many digits.


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

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#49 2014-01-17 14:14:13

mathaholic
Member
From: Juliania
Registered: 2012-11-29
Posts: 2,845
Website

Re: Prime Number Challenges

Oh. People not smarter than you may think 2[sup]6[/sup] in 34, or 64. That's good. i said square. Not power right?

35. 5^p2-(p4-p2)
36. 48 + (p20 - p12)


"Double the fun, double the thrill, double the coolness" - Julianthewiki

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#50 2014-01-17 14:28:04

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 87,238

Re: Prime Number Challenges


In mathematics, you don't understand things. You just get used to them.
Of course that result can be rigorously obtained, but who cares?
Combinatorics is Algebra and Algebra is Combinatorics.

Offline

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