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## #26 2014-01-04 16:05:53

bobbym

Online

### Re: Prime Number Challenges

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #27 2014-01-04 16:08:19

mathaholic
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### Re: Prime Number Challenges

No, right?

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

22. p18 - p4 = ?

Last edited by mathaholic (2014-01-04 16:08:37)

246 pages on Prime Numbers Wiki (+1)

## #28 2014-01-04 16:13:58

bobbym

Online

### Re: Prime Number Challenges

No is correct for 19 - 20.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #29 2014-01-04 17:26:38

mathaholic
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### Re: Prime Number Challenges

For 21: 91.

22. 61 - 7 = 54.

23. Is 2:17 prime?

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## #30 2014-01-04 19:12:18

bobbym

Online

### Re: Prime Number Challenges

What is 2:17?

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #31 2014-01-04 19:45:33

mathaholic
Star Member

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### Re: Prime Number Challenges

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

246 pages on Prime Numbers Wiki (+1)

## #32 2014-01-04 20:06:58

bobbym

Online

### Re: Prime Number Challenges

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #33 2014-01-04 21:21:03

mathaholic
Star Member

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### Re: Prime Number Challenges

137 is prime.

Next questions tomorrow

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## #34 2014-01-04 21:27:57

bobbym

Online

### 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.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #35 2014-01-05 11:50:58

mathaholic
Star Member

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### 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?

246 pages on Prime Numbers Wiki (+1)

## #36 2014-01-05 12:33:23

bobbym

Online

### Re: Prime Number Challenges

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #37 2014-01-05 12:48:19

Agnishom
Real Member

Online

### 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'
'Who are you to judge everything?' -Alokananda

## #38 2014-01-05 12:49:54

bobbym

Online

### 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.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #39 2014-01-05 12:59:46

mathaholic
Star Member

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### Re: Prime Number Challenges

Sorry bobbym.

Now, what is the answer to the questions?

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## #40 2014-01-05 13:01:43

bobbym

Online

### 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.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #41 2014-01-05 18:36:14

mathaholic
Star Member

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### Re: Prime Number Challenges

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

246 pages on Prime Numbers Wiki (+1)

## #42 2014-01-05 20:32:12

bobbym

Online

### Re: Prime Number Challenges

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #43 2014-01-05 21:00:02

mathaholic
Star Member

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### Re: Prime Number Challenges

Okay.

29. What is p19 - p32?
30. What is the square root of the largest known prime number?

246 pages on Prime Numbers Wiki (+1)

## #44 2014-01-05 21:11:47

bobbym

Online

### Re: Prime Number Challenges

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #45 2014-01-08 19:25:01

mathaholic
Star Member

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### Re: Prime Number Challenges

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

246 pages on Prime Numbers Wiki (+1)

## #46 2014-01-08 20:34:33

bobbym

Online

### 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.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #47 2014-01-08 20:52:02

mathaholic
Star Member

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### Re: Prime Number Challenges

I know that. As in the square root.

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

246 pages on Prime Numbers Wiki (+1)

## #48 2014-01-08 20:55:54

bobbym

Online

### 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.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #49 2014-01-18 13:14:13

mathaholic
Star Member

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### Re: Prime Number Challenges

Oh. People not smarter than you may think 26 in 34, or 64. That's good. i said square. Not power right?

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

246 pages on Prime Numbers Wiki (+1)

## #50 2014-01-18 13:28:04

bobbym

Online

### Re: Prime Number Challenges

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.