| Prime numbers 16:55 - Feb 27 with 1031 views | Wicksy |
Found out something the other day that I'd never heard before.
Apart from the first two primes (2 and 3) all the others are adjacent to a multiple of 6
eg 5 (6) 7, 11 (12) 13, 17 (18) 19 etc
Apparently it goes on for ever.
Probably just me but I found that fascinating |  |
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| Prime numbers on 17:32 - Feb 27 with 871 views | Illinoisblue |
Six, seven, though. |  |
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| Prime numbers on 17:47 - Feb 27 with 812 views | DarkBrandon |
It is because numbers (starting from a multiple of six) follow the pattern:
Multiple of 6 (so, multiple of 2 and 3)
Possible prime
Multiple of 2
Multiple of 3
Multiple of 2
Possible Prime
Multiple of 6 |  | | |
| Prime numbers on 18:04 - Feb 27 with 748 views | Nthsuffolkblue |
I didn't know that either. Numbers are fascinating. Every multiple of 3 is made up of digits that sum to a multiple of 3. Unless you have heard it, you wouldn't know would you? Unless, of course, you are simply a mathematical genius and can see it because it's just obvious! |  |
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| Prime numbers on 18:08 - Feb 27 with 735 views | Meadowlark |
Why didn't 6 like 7?
Cos 7, ate 9.
When asked why, 7 replied " 3 squared meals a day" |  | | |
| Prime numbers on 19:16 - Feb 27 with 601 views | armchaircritic59 |
Fascinating things, numbers, such as the one you've mentioned, and things like the " Fibonnaci Sequence " and the " Golden Ratio ". |  | | |
| Prime numbers on 19:53 - Feb 27 with 511 views | _CliveBaker_ |
| Prime numbers on 18:04 - Feb 27 by Nthsuffolkblue |
I didn't know that either. Numbers are fascinating. Every multiple of 3 is made up of digits that sum to a multiple of 3. Unless you have heard it, you wouldn't know would you? Unless, of course, you are simply a mathematical genius and can see it because it's just obvious! |
I love numbers and patterns.
Dates are cool too. Of the calendar variety I mean, not taking a romantic interest out for a drink. Although that can be interesting as well.
For example the following dates are the same day of the week every year: 03/01, 28/02, 14/03, 04/04, 09/05, 06/06, 11/07, 08/08, 05/09, 10/10, 07/11, 12/12. This year that happens to be a Saturday. So if you can remember 4/4, 6/6, 8/8, 10/10 and 12/12 as well as the saying ‘from 9-5 I work at 7/11 (and the inverses of both of those) + the Jan, Feb and Mar dates you have an anchor point in every month. Can therefore work out what day of the week any date in the year is off that. I learnt this a few years ago and it’s genuinely come in quite handy at times. [Post edited 27 Feb 19:57]
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| Prime numbers on 21:21 - Feb 27 with 346 views | bsw72 |
Numbers are extraordinary but consider that they are neither physically concrete nor purely fictitious, it’s a fascinating philosophical discussion. |  | | |
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