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Old 2013-01-01, 17:37   #12
Uncwilly
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Code:
13 <- year is prime
-1 <-take away month
-1 <-take away day
-------------------
11 <- prime
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Old 2013-01-01, 17:47   #13
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mulltiply year by day and divide by month, we still are in the same year!
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Old 2013-01-02, 23:36   #14
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2013 is one of the rare years whose Gregorian year number has "0", "1", "2", and "3".

Next one will be 2031, then no more until 2103.
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Old 2013-01-05, 01:20   #15
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Quote:
Originally Posted by cheesehead View Post
2013 is one of the rare years whose Gregorian year number has "0", "1", "2", and "3".
And today added a "4" in the date.
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Old 2013-01-05, 17:18   #16
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Today's date: 5/1/13 (Euro style)
5=1+1+3
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Old 2013-01-06, 15:09   #17
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Code:
 20  <-century
-13  <-years
- 1  <-month
---------------
  6  <-day
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Old 2013-01-06, 16:59   #18
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(20132-911)/2 is prime.

((201361-1)/2012)-61 is divisible by 503 (a factor of 2012).
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Old 2013-01-07, 16:17   #19
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(20-13)/7=1

2+0+1+3+1=7
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Old 2013-01-08, 11:30   #20
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Today is (over here) 1/8/13, and (1+1)^3 = 8.

Over there, it's 8/1/13, so 8 = (1+1)^3.
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Old 2013-01-13, 12:12   #21
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oh well, this one is too good to ignore, even a day late

yesterday: 1/12/13

11213 is the smallest five digit Mersenne prime exponent
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Old 2013-01-13, 15:16   #22
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Quote:
Originally Posted by davar55 View Post
yesterday: 1/12/13

11213 is the smallest five digit Mersenne prime exponent
Yesterday was a busy day for me, but I was going to post:

1+12=13
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