Chalkdust crossnumber 07

wflaherty99 · 2018-05-06, 19:21

If anyone could give solutions to some of these problems, that would be much appreciated!

http://chalkdustmagazine.com/categor...s/crossnumber/

lavalamp · 2018-05-11, 11:42

Here are some answers or possible answers:

2 & 11:

Code:

4 & 5: 136 <--> 244

7:

Code:

378
666
990

24:

Code:

1634
8208
9474

26: 736

29:

Code:

54748
92727
93084

Edit: No leading zeroes.

lavalamp · 2018-05-11, 14:24

13: 426
8: 426^6 = 5976646846618176
12: 426^5 = 14029687433376

17: 224

22: 427 - 630
10: 427^5 - 630^5

lavalamp · 2018-05-12, 15:52

I've submitted my answer now.

For anyone looking to compare answers, the MD5 hash for the sum of my accross clues is e8938a2d47a3f3c420478335278eb2e9.

Another interesting point is that the answer is a semiprime equal to 5 * p16.

petrw1 · 2018-05-14, 23:17

My answer matches your 5XP16

For MD5....I tried 3 different MD5 generators and got 3 different answers but 1 matched yours.

I think we match!!!

I have to acknowledge that my son helped a ton and had the "BIG" calculator.

lavalamp · 2018-05-15, 06:20

Quote:

Originally Posted by petrw1

I have to acknowledge that my son helped a ton and had the "BIG" calculator.

What's the "BIG" calculator? I used pari/gp for a few answers, is that what you mean?

retina · 2018-05-15, 09:28

Quote:

Originally Posted by lavalamp

... the MD5 hash is ... e8938a2d47a3f3c420478335278eb2e9.

... the answer is a semiprime equal to 5 * p16.

So all I have to do is hash all 16 and 17 digit numbers of the form 5*p16 and I can get the answer. Should be a doddle. brb

There are only 249,393,770,611,256 p16 numbers. Easy.

petrw1 · 2018-05-15, 15:15

Quote:

Originally Posted by lavalamp

What's the "BIG" calculator? I used pari/gp for a few answers, is that what you mean?

Java with BigInteger.

lavalamp · 2018-05-15, 18:29

Quote:

Originally Posted by petrw1

Java with BigInteger.

Ah, no need for that. All of these fit well inside a 64 bit int, you can get 19 digits in those.

Quote:

Originally Posted by retina

So all I have to do is hash all 16 and 17 digit numbers of the form 5*p16 and I can get the answer. Should be a doddle. brb

There are only 249,393,770,611,256 p16 numbers. Easy.

Sadly do-able these days in a couple of hours with a 1080 Ti.

petrw1 · 2018-05-15, 20:12

Quote:

Originally Posted by lavalamp

Ah, no need for that. All of these fit well inside a 64 bit int, you can get 19 digits in those.

Yes, he mentioned that after he was done.

2018-05-06, 19:21	#1
wflaherty99 May 2018 1 Posts	Chalkdust crossnumber 07 If anyone could give solutions to some of these problems, that would be much appreciated! http://chalkdustmagazine.com/categor...s/crossnumber/

2018-05-11, 11:42	#2
lavalamp Oct 2007 Manchester, UK 5×271 Posts	Here are some answers or possible answers: 2 & 11: Code: 153 370 371 407 4 & 5: 136 <--> 244 7: Code: 378 666 990 24: Code: 1634 8208 9474 26: 736 29: Code: 54748 92727 93084 Edit: No leading zeroes. Last fiddled with by lavalamp on 2018-05-11 at 12:23

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2018-05-11, 14:24	#3
lavalamp Oct 2007 Manchester, UK 5×271 Posts	13: 426 8: 426^6 = 5976646846618176 12: 426^5 = 14029687433376 17: 224 22: 427 - 630 10: 427^5 - 630^5

2018-05-12, 15:52	#4
lavalamp Oct 2007 Manchester, UK 5×271 Posts	I've submitted my answer now. For anyone looking to compare answers, the MD5 hash for the sum of my accross clues is e8938a2d47a3f3c420478335278eb2e9. Another interesting point is that the answer is a semiprime equal to 5 * p16.

2018-05-14, 23:17	#5
petrw1 1976 Toyota Corona years forever! "Wayne" Nov 2006 Saskatchewan, Canada 11104₈ Posts	My answer matches your 5XP16 For MD5....I tried 3 different MD5 generators and got 3 different answers but 1 matched yours. I think we match!!! I have to acknowledge that my son helped a ton and had the "BIG" calculator.