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IHC Newp
messydesk
Posts: 20,790 ✭✭✭✭✭
Don't have many of these in my collection. Decided this would make a good addition to the prime number set as a unique representative of its composition. I quite like it. Teeny bit of color on the obverse 4-5:00.
John
Keeper of the VAM Catalog • Professional Coin Imaging • Prime Number Set • World Coins in Early America • British Trade Dollars • Variety Attribution
Keeper of the VAM Catalog • Professional Coin Imaging • Prime Number Set • World Coins in Early America • British Trade Dollars • Variety Attribution
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The Penny Lady®
very nice example...congrats...image rocks of course too
Mike
Interesting type set idea...."prime number set"
I've been told I tolerate fools poorly...that may explain things if I have a problem with you. Current ebay items - Nothing at the moment
Latin American Collection
AB
So, do you have to have mathematic credentials to collect prime number coins?????
OINK
I see there are no primes in the 1790s, but there is at least one in each decade since then.
1829, 1853, 1873, 1877, 1907, 1909, 1933 and 1913 are included - some cool US numismatic years.
<< <i>So, do you have to have mathematic credentials to collect prime number coins????? >>
No, but the same predisposition to pursue one likely tends to also lead one to pursuit of the other.
PCGS 64, if anyone's wondernig.
Keeper of the VAM Catalog • Professional Coin Imaging • Prime Number Set • World Coins in Early America • British Trade Dollars • Variety Attribution
<< <i>Cool concept.
I see there are no primes in the 1790s, but there is at least one in each decade since then.
1829, 1853, 1873, 1877, 1907, 1909, 1933 and 1913 are included - some cool US numismatic years. >>
Some very cool years, indeed, although 1829, 1853, and 1909 aren't on the list. There's a link to what I have so far in my sig.
Keeper of the VAM Catalog • Professional Coin Imaging • Prime Number Set • World Coins in Early America • British Trade Dollars • Variety Attribution
I like your "essential 5", and how the Fugio is prime.
And there's room for expansion.
The 20c and $4 may be difficult! :-)
I'm embarassed I listed some non-prime numbers - will have to check my code!
I found the bug, which managed to ignore all prime factors > 13, oops....
(I could have just looked at the prime lists on the web, doh!)
Maybe I could make a cheap knock-off of your list including 1829 and 1853, as "dates not divisible by primes under 17". :-)
So there are no primes in the decades 1790 1850 1890 1920 1960.
And the 1870s are "prime-rich".