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#3151 Re: Puzzles and Games » Add 13 more and post it forever. » 2010-05-04 22:19:50
Your 4563 was the best one yet. Sorry you deleted it.
Tigeree beat me to the punch (Hi, Tigeree! 
), but this next one's basically the same.
#3152 Re: Puzzles and Games » Add 13 more and post it forever. » 2010-05-04 21:55:25
4576
(-4+5)*(7+6) = 13
#3153 Re: Puzzles and Games » Add 13 more and post it forever. » 2010-05-04 21:04:23
Had this one ready.
29 seconds between our posts was quite stunning! I thought it was a time warp thing or international time difference, or MIF clock glitch, or that you used my time machine...or something. 
#3155 Re: Puzzles and Games » Add 13 more and post it forever. » 2010-05-04 13:08:06
bobbym wrote:Didn't exactly mean it like that. I guess you know what I mean.
hmmm... I'm not sure bout phrontister but i guess i know wat u meant there?!!
I suffer from the disease that if there's an opportunity to take something out of context - just to make something confusing that wasn't - I'll take it. Sometimes also called 'foot-in-mouth' disease...but I like to call it tongue-in-cheek :^) Yes...I'm guilty of twisting what you said, Bobby. Anyone for some pi?
4394:
4+3+9+4=20 ?
-4+3+9+4=12 close
(4+3+9)/4=4
4/3+9/4=43/12
4+3/9+4=25/3and i've already tried enough... good nite!!
4394 : 4! / 3 + 9 - 4 = 13
What is the Next Number btw??
It's always Post # * 13.
Do you 2 dudes know each other?
Only cyberspacely, here on MIF.
4446 (catchup). Gotta keep pace, otherwise quittyqat will descend on us like a ton of bricks...which could get messy! 
4459 : -4 / 4 + 5 + 9 = 13
No time for anything fancier...
#3156 Re: Puzzles and Games » Add 13 more and post it forever. » 2010-05-04 02:15:26
Hi, ZHero!
Didn't recognise you without your makeup on! I was about to welcome you to the forum.
Nice numerical gymnastics routine!
4368
-4+3+6+8 = 13
4+3!/6+8 = 13
√4-3+6+8 = 13
(4/3*6/8) - (4*3-6*8) - (4+3+6+8) - (4-3-(6-8)) = 13
#3157 Re: Puzzles and Games » Add 13 more and post it forever. » 2010-05-03 23:32:54
Post #333:
A. x = any number, y = -4225
B. x = -4225, y = any number
I don't know if they're the only solutions.
Don't worry about it. As long as I am still having problems coming up with an interesting solution to your YOB, you are OK with me.
I see. I'm only OK with you until then, then. 
And how can you fit trying to solve my YOB puzzle into your busy day, in view of what you said about NOHOW?
I am having fun spending a little time each day on it. I am getting nowhere but enjoying the play.
That was 220 days ago.
220 factorized = 2*2*5*11......2*25-11 = 39......39 = 13 + 13 + 13 : ie, eerily linked to this thread!
Catchups:
4238 : 4 / 2 + 3 + 8 = 13
4251 : (4 * 2 + 5) * 1 = 13
4264 : √4 * 26 / 4 = 13
4277 : -√4 / 2 + 7 + 7 = 13
4290 : √4 + 2 + 9 + 0 = 13
4303 : 4 + (3 + 0) * 3 = 13
4316 : (4 + 3) * 1 + 6 = 13
4329 : 4! / 3 / 2 + 9 = 13
4342 : 4 + 3 + 4 + 2 = 13
#3158 Re: Puzzles and Games » Add 13 more and post it forever. » 2010-05-03 23:05:32
I don't know, someone might not have cared for the 4000's very much and decided to skip most of them.
That was me, counting skipping sheep in my sleepzzzzz! 
We'd better get back on track, as none of the numbers after 4199 are multiples of 13.
Luckily I can just use the trick from the post where I derailed and don't have to think up anything wonderful.
4212
The difference between 4212 and 5323 (5325 is 4212 raised by the Victor Borge Constant) = 1111......and 11+1+1 = 13.
And, what's more (moreover), is that 1111 factorizes into 11*101...and 11+1+0+1 = 13.
#3159 Re: Puzzles and Games » Add 13 more and post it forever. » 2010-05-03 22:53:29
5038
The number of points scored by Stoyan Zlatev from Bulgaria in the team competition of the Modern Pentathlon at the 1976 Summer Olympics.
#3160 Re: Puzzles and Games » Add 13 more and post it forever. » 2010-05-03 21:55:42
5012
The difference between 5012 and 6123 (ie, 5012 raised by the Victor Borge Constant) = 1111......and 11+1+1 = 13.
And, what's more (moreover), is that 1111 factorizes into 11*101...and 11+1+0+1 = 13.
#3161 Re: Puzzles and Games » Add 13 more and post it forever. » 2010-05-03 15:05:50
4186
int(10000*frac(100000*41/86)) = 4186
int(10000*frac(10^(13*2)*41/86)) = 4186
int(10000*frac(10^(13*758)*41/86)) = 4186
int(10000*frac(10^(13*(41*8+86*5))*41/86)) = 4186
4186- Post #322 = 3864......and -38+64 = 26 = 13+ 13
#3162 Re: Puzzles and Games » Add 13 more and post it forever. » 2010-05-03 13:28:55
4160
4+1+60 = 65 = 5*13
#3163 Re: Puzzles and Games » Add 13 more and post it forever. » 2010-05-03 13:21:07
4134
4+13-4 = 13
41+34 = 75, which factorizes into 3*5*5......and 3+5+5 = 13
#3164 Re: Puzzles and Games » Add 13 more and post it forever. » 2010-05-03 12:51:31
4108
4+1+0+8 = 13
The reverse of 4108 is 8014, which is a Smith Semiprime (ie, a Smith Number that is the product of two primes): 2 * 4007
And 2+4+0+0+7 = 13
91 / 13 = 7, and 4095 / 7 = 585......which is a palindrome completely divisible by 13.
585 factorizes into 3*3*5*13......and (3+3-5)*13 = 13
#3165 Re: Puzzles and Games » Add 13 more and post it forever. » 2010-05-01 02:38:14
4004
A palindrome!
#3166 Re: Puzzles and Games » Add 13 more and post it forever. » 2010-05-01 02:29:44
3978
Applying the Victor Borge constant, 3978 becomes 41089: 4 + 10 + 8 - 9 = 13
I, too, am far too young to remember him...and if I was old enough to remember him I still wouldn't remember him because I would be too old for my memory to work well enough to remember him.
#3167 Re: Puzzles and Games » Add 13 more and post it forever. » 2010-05-01 02:13:20
3952
-3+9+5+2 = 13
-39 + 52 = 13
13 + 13 + 13 = 39, & 13 + 13 + 13 + 13 = 52
3952 appears in the concatenated list of Smith numbers at the position that is preceded by 1339 digits: 13*100 + 13*3 = 1339
#3168 Re: Puzzles and Games » Add 13 more and post it forever. » 2010-05-01 02:02:16
3926 = 302 * 13 (!)
I've got V.B.'s video "Then & Now". He was brilliant: a talented pianist and terrific entertainer. Great comedian, IMHO...touched a chord with me.
#3169 Re: Puzzles and Games » Add 13 more and post it forever. » 2010-05-01 01:28:15
How the heck can you know about Victor Borge?
I've got several of his vinyl LPs, a treasured possession passed down to me from my great grandfather. Or maybe I found them in an op shop...I don't recall now.
3900
Ka-ching! (13 + 13 + 13)*100
#3170 Re: Puzzles and Games » Add 13 more and post it forever. » 2010-05-01 00:40:36
Power towers are read from the top down.
Oops! I did know that. <blush>. Thanks for pointing that out, Bobby. My mind was in neutral at the time and I read them from the bottom up.
Moreover [2 is]...the Only Lonely EVEN PRIME number Known So Far (shame if we still can't find one more within next decade
)!
It will happen.
(a) Technological advancement is only in its infancy; and
(b) words are constantly changing...see this Victor Borge video, with Dutch subtitles (after watching the video you'll understand that the subtitles are actually in double Dutch).
MathWorld:
The unique even prime number 2. All other primes are odd primes. Humorously, that means 2 is the "oddest" prime of all.
The sequence 2, 4, 6, 10, 14, 22, 26, 34, 38, ... (Sloane's A001747) consisting of the number 2 together with the primes multiplied by 2 is sometimes also called the even primes, since these are the even numbers n = 2k that are divisible by just 1, 2, k, and 2k.
3861 (catch-up)
3874
3874 = 4985 (a Victor Borge number), whose digit sum is 26 (ie, 13 + 13).
#3171 Re: Puzzles and Games » Add 13 more and post it forever. » 2010-04-30 22:18:24
3809
Nice thought!
But isn't 2 the least prime number?
3835
-3+8+3+5 = 13
#3172 Re: Puzzles and Games » The missing dollar (& the 2 extra dollars) » 2010-04-30 10:39:00
Very close!
#3173 Re: Puzzles and Games » The missing dollar (& the 2 extra dollars) » 2010-04-30 03:14:18
Hi ZHero,
Part 2:
#3174 Re: Puzzles and Games » The missing dollar (& the 2 extra dollars) » 2010-04-30 02:44:35
Hi ZHero,
Part 1: 
Part 2:
#3175 Re: Exercises » What do you think? » 2010-04-29 02:38:46
Thanks, Bobby. Looks like that page will help. I wasn't totally daunted by not understanding the D.A. and would have skipped it and tracked back if there was no choice, but I thought I'd at least have a bit of a go at tackling this from the ground up if it wasn't going to make life too difficult.
Bed...early start in the morning.