+EveningKiss Posted December 29, 2010 Share Posted December 29, 2010 Hey i have an UNUSUAL question. How in the heck do you do the base 19/32/34/69/ ect math for mystery caches?! Ive asked a few math people i know but not one can explain it to me in a way I can comprehend. I understand the base to (ie 1-9) and that A=1, B=12 ect ect but i have NO idea how that coorilates to figuring out Base 32. Sorry for the stupid question but yeah... no clue what im doing here.... Quote Link to comment
+B+L Posted December 29, 2010 Share Posted December 29, 2010 Hey i have an UNUSUAL question. How in the heck do you do the base 19/32/34/69/ ect math for mystery caches?! This will help: Number Conversion Table Quote Link to comment
John E Cache Posted January 1, 2011 Share Posted January 1, 2011 Each digit in a base32 number can have 32 values, 0 thru 31. Similar to decimal 0-9. Since 32 is an even 5 binary digits(11111 binary = 31 decimal), I would convert each digit to a 5 bit number and then you have binary number that a lot of calculators can use. 325 base32 = 00011 00010 000101 base2 Quote Link to comment
+LandRover Posted January 1, 2011 Share Posted January 1, 2011 Each digit in a base32 number can have 32 values, 0 thru 31. Similar to decimal 0-9. Since 32 is an even 5 binary digits(11111 binary = 31 decimal), I would convert each digit to a 5 bit number and then you have binary number that a lot of calculators can use. 325 base32 = 00011 00010 000101 base2 That's what I was going to say but I didn't want to sound to geeky. Quote Link to comment
John E Cache Posted January 2, 2011 Share Posted January 2, 2011 Each digit in a base32 number can have 32 values, 0 thru 31. Similar to decimal 0-9. Since 32 is an even 5 binary digits(11111 binary = 31 decimal), I would convert each digit to a 5 bit number and then you have binary number that a lot of calculators can use. 325 base32 = 00011 00010 000101 base2 That's what I was going to say but I didn't want to sound to geeky. I am way past worrying about that. I had to give it shot since I am a geek. I remembered the method I used when I worked on computers many years ago, before calculators. Using decimal arithmetic any base x number ABCD.... = A times x plus B answer times x plus C answer times x plus D etc. Quote Link to comment
+dfx Posted January 2, 2011 Share Posted January 2, 2011 what hasn't been mentioned yet is that usually for all numeral systems with bases higher than 10, the regular numeric digits 0-9 are used for values 0-9 and for digits with values of 10 and up, letters are used. this works up to base-36, because you have 10 numeric digits plus 26 letters. Quote Link to comment
John E Cache Posted January 2, 2011 Share Posted January 2, 2011 what hasn't been mentioned yet is that usually for all numeral systems with bases higher than 10, the regular numeric digits 0-9 are used for values 0-9 and for digits with values of 10 and up, letters are used. this works up to base-36, because you have 10 numeric digits plus 26 letters. All geeky geocachers know "degrees minutes seconds" is a base60(called sexagesimal) number .You are right, license plates are base36 numbers. Quote Link to comment
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