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The Radio 3 Boards > General Chat > The Coffee Bar > one to a million!
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Author Topic: one to a million!  (Read 54129 times)
Chafing Dish
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« Reply #1800 on: 11:21:19, 04-07-2007 »
Quote from: thompson1780 on 11:03:43, 04-07-2007
CD, what function does the # symbol represent?  Is there a theorem / hypothesis yet which states 1571 is the only prime of that form?  or disprove it?
The # sign is like ! except that n! means multiply all numbers less than or equal to n, while n# means multiply all prime numbers less than or equal to n. So 1571, in plain English, is equal to all composite numbers less than 1571 multiplied together, added to 1, and then divided again by 1571. As for whether this is proven, I doubt it... the wording seems to imply that it isn't proven. It may not even be a conjecture.
« Last Edit: 11:22:55, 04-07-2007 by Chafing Dish » Logged
harmonyharmony
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« Reply #1801 on: 11:22:08, 04-07-2007 »
1590 was the year of the first recorded smoking ban by Pope Urban VII:


Bother. Pipped to the post.
Never mind. Pope Urban VII only lasted 13 days in office.
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'is this all we can do?'
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Janthefan
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« Reply #1802 on: 11:56:40, 04-07-2007 »
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Live simply that all may simply live
thompson1780
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« Reply #1803 on: 12:03:00, 04-07-2007 »
Quote from: Chafing Dish on 11:21:19, 04-07-2007
Quote from: thompson1780 on 11:03:43, 04-07-2007
CD, what function does the # symbol represent?  Is there a theorem / hypothesis yet which states 1571 is the only prime of that form?  or disprove it?
The # sign is like ! except that n! means multiply all numbers less than or equal to n, while n# means multiply all prime numbers less than or equal to n. So 1571, in plain English, is equal to all composite numbers less than 1571 multiplied together, added to 1, and then divided again by 1571. As for whether this is proven, I doubt it... the wording seems to imply that it isn't proven. It may not even be a conjecture.

Thanks CD,

and here is the next....



Built in 1592

Tommo
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Made by Thompson & son, at the Violin & c. the West end of St. Paul's Churchyard, LONDON
Ron Dough
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« Reply #1804 on: 12:32:23, 04-07-2007 »



Death of Christopher ("Kit") Marlowe, 1593.

And for a slightly different view of his life and works:

 http://incompetech.com/authors/kitmarlowe/
« Last Edit: 12:37:04, 04-07-2007 by Ron Dough » Logged
Baziron
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« Reply #1805 on: 12:37:58, 04-07-2007 »


Poor old Palestrina passed away in 1594
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A
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« Reply #1806 on: 12:39:54, 04-07-2007 »


1595 Mercator
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Well, there you are.
Chafing Dish
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« Reply #1807 on: 12:40:45, 04-07-2007 »
1594: a big year for composer deaths

Palestrina, but also Lasso, and theorist Girolamo Mei


Sorry, no pic of Mei, just a letter he wrote.

Now we're at 1595
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A
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« Reply #1808 on: 12:42:48, 04-07-2007 »
No we are not!!

1596 please
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martle
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« Reply #1809 on: 12:45:27, 04-07-2007 »
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Green. Always green.
A
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« Reply #1810 on: 12:46:26, 04-07-2007 »


Bulert. Born 1597
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Baziron
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« Reply #1811 on: 14:15:42, 04-07-2007 »
« Last Edit: 16:47:19, 04-07-2007 by Baziron » Logged
Mary Chambers
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« Reply #1812 on: 14:18:18, 04-07-2007 »
What on earth can this be all about?
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Baziron
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« Reply #1813 on: 14:24:33, 04-07-2007 »
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A
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« Reply #1814 on: 14:28:43, 04-07-2007 »


As it is all in Chinese, I am not too sure why it is 1601, but that is what it says on the tin!!
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