Random trivia questions - Page 3

rogue · 2014-01-13, 20:45

Quote:

Originally Posted by davar55

Out of the 5 trillion, 345 billion, 678 million, 999 thousand,
forty-seven total number of trivia questions,
what is the answer to the six-hundred seventh?

(Is that random enough? Any sensoble joke answer accepted.)

42, but do you remember the question?

davar55 · 2014-01-13, 20:55

Quote:

Originally Posted by rogue

42, but do you remember the question?

My whole memory contains only 42 MBs, so no, it was long
gone when I started to ask my question. WHich was what again?

Brian-E · 2014-01-14, 20:45

Quote:

Originally Posted by davar55

WHich was what again?

Quote:

Originally Posted by davar55

Out of the 5 trillion, 345 billion, 678 million, 999 thousand,
forty-seven total number of trivia questions,
what is the answer to the six-hundred seventh?

(Is that random enough? Any sensoble joke answer accepted.)

Prime. The fourteenth such.

davar55 · 2014-01-14, 21:03

Quote:

Originally Posted by Brian-E

Prime. The fourteenth such.

Yes indeed! Give that person a cigar.

gd_barnes · 2014-02-04, 07:20

Quote:

Originally Posted by Brian-E

Prime. The fourteenth such.

In case anyone missed this: Forty-seven, the number spelled out on the second line of Davar's post, is the 14th prime. Also: 607, the number of the trivia question asked for, is prime.

...a lot of subtleties in this forum.

LaurV · 2014-02-04, 12:11

I think the answer pointed the fact that 607 is the exponent of the 14th mersenne prime, which was clear from the start. The fact that 47 is the 14th (odd!, because if you count 2, it is the 15th ) prime may be merely a coincidence, we don't think the OP was thinking so deep

(edit: by OP I mean the one posting the question, not the one starting the topic)

Brian-E · 2014-02-04, 13:16

Oh, I'm sure he was thinking much much deeper than that.

Something to do with repunit numbers, perhaps? The number referred to, 5345678999047, is divisible by both 73 and 317. 73 divides all repunits consisting a multiple of 8 ones. And the repunit consisting of 317 ones is prime. The cofactor after dividing by 73 and 317 is a semi-prime, 1721*134227, and the significance of these factors escapes me for the moment.

davar55 · 2014-05-20, 17:18

Well, thanks for that, I think. I did have one more 14 in mind,
and I think you knew which, but the number's changed now.
Yes?

davar55 · 2015-03-01, 08:24

Quote:

Originally Posted by davar55

Well, thanks for that, I think. I did have one more 14 in mind,
and I think you knew which, but the number's changed now.
Yes?

Wow has it changed. I think it's now 37.

New geography random trivia question:

Without examining a map, strictly from memory,
What South American countries do not border on Brazil (name all three) ?

LaurV · 2015-03-01, 10:09

Heh, I named 4 and was wrong with two...
Looked on a list of countries for the third, totally missed that third without a list.
I am still not convinced they are not four, five, six.... Looking to the map right now. Sorry for cheating

Edit, grrr... actually, they are only two! hehehe. And I was right with both, from 4 choices. :razz:
I hope you don't include the Central America and the islands, in that case they are much more. Without the island and the panaman bridge, and north of it, there are only two "pure continental" countries which don't have _land_ borderline with Brazil...

davar55 · 2015-03-01, 19:13

Quote:

Originally Posted by LaurV

Heh, I named 4 and was wrong with two...
Looked on a list of countries for the third, totally missed that third without a list.
I am still not convinced they are not four, five, six.... Looking to the map right now. Sorry for cheating

Edit, grrr... actually, they are only two! hehehe. And I was right with both, from 4 choices. :razz:
I hope you don't include the Central America and the islands, in that case they are much more. Without the island and the panaman bridge, and north of it, there are only two "pure continental" countries which don't have _land_ borderline with Brazil...

Think again, my friend. There are three.

2014-02-04, 12:11	#28
LaurV Romulan Interpreter Jun 2011 Thailand 7×1,373 Posts	I think the answer pointed the fact that 607 is the exponent of the 14th mersenne prime, which was clear from the start. The fact that 47 is the 14th (odd!, because if you count 2, it is the 15th ) prime may be merely a coincidence, we don't think the OP was thinking so deep (edit: by OP I mean the one posting the question, not the one starting the topic) Last fiddled with by LaurV on 2014-02-04 at 12:25

2015-03-01, 10:09	#32
LaurV Romulan Interpreter Jun 2011 Thailand 9611₁₀ Posts	Heh, I named 4 and was wrong with two... Looked on a list of countries for the third, totally missed that third without a list. I am still not convinced they are not four, five, six.... Looking to the map right now. Sorry for cheating Edit, grrr... actually, they are only two! hehehe. And I was right with both, from 4 choices. :razz: I hope you don't include the Central America and the islands, in that case they are much more. Without the island and the panaman bridge, and north of it, there are only two "pure continental" countries which don't have _land_ borderline with Brazil... Last fiddled with by LaurV on 2015-03-01 at 10:24

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2014-02-04, 13:16	#29
Brian-E "Brian" Jul 2007 The Netherlands 110011000101₂ Posts	Oh, I'm sure he was thinking much much deeper than that. Something to do with repunit numbers, perhaps? The number referred to, 5345678999047, is divisible by both 73 and 317. 73 divides all repunits consisting a multiple of 8 ones. And the repunit consisting of 317 ones is prime. The cofactor after dividing by 73 and 317 is a semi-prime, 1721*134227, and the significance of these factors escapes me for the moment.

2014-05-20, 17:18	#30
davar55 May 2004 New York City 2·29·73 Posts	Well, thanks for that, I think. I did have one more 14 in mind, and I think you knew which, but the number's changed now. Yes?