mersenneforum.org > Math Known Largest Harshad Number.
 Register FAQ Search Today's Posts Mark Forums Read

 2010-06-12, 01:29 #1 spkarra   "Sastry Karra" Jul 2009 Bridgewater, NJ (USA) 33 Posts Known Largest Harshad Number. Hi, I want to find as many Harshad Numbers as I can using JAVA on my 32-bit XP. Before I start, I would like to know if anyone did the same. If so, what is the know largest Harshad Number (of course to base 10). I will start from there onwards. Eg: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 18, 20, 21, 24, 27, 30, 36 etc..... Thanks, Sastry Karra
 2010-06-12, 01:40 #2 axn     Jun 2003 34×67 Posts 10^n, 2*10^n, 5*10^n, ... Or, did you have something else in mind?
 2010-06-13, 20:38 #3 spkarra   "Sastry Karra" Jul 2009 Bridgewater, NJ (USA) 110112 Posts Thanks for the response. Actually, I am looking for largest Harshad Number that is not divisible by 10 vix. 12, 18 etc.
2010-06-13, 21:02   #4
axn

Jun 2003

34·67 Posts

Quote:
 Originally Posted by spkarra Thanks for the response. Actually, I am looking for largest Harshad Number that is not divisible by 10 vix. 12, 18 etc.
You need to specify more conditions. Otherwise there are other trivial solutions, like 10^n+2, 10^n+8, 2*10^n+1, 2*10^n+4, 2*10^n+7, etc...

 Similar Threads Thread Thread Starter Forum Replies Last Post c10ck3r Data 49 2017-12-10 19:39 Prime95 Miscellaneous Math 20 2008-07-29 16:58 Heather Math 90 2006-04-01 22:06 danjmi Science & Technology 17 2004-09-26 20:25 McBryce Lounge 39 2003-08-12 19:35

All times are UTC. The time now is 08:09.

Tue Dec 6 08:09:31 UTC 2022 up 110 days, 5:38, 0 users, load averages: 1.25, 1.09, 0.99