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richie
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10 Feb 2008, 5:59 am

Tim_Tex wrote:

1319

1319 a prime....

viska wrote:

1321. In octal, 2451. Also, it has "321" as a substring, which rox.

1321 a prime and an "emirp" of 1231 and the 10th prime in the Primes of the form 47n²-1701n+10181 sequence.
(Disregard the minus sign, primality is determined by absolute value.)

1323=7²x3³

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SilverProteus
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10 Feb 2008, 8:37 am

1324

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10 Feb 2008, 9:32 am

1325

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SilverProteus
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10 Feb 2008, 9:57 am

1326

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richie
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10 Feb 2008, 10:03 am

1327 a prime...

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Tim_Tex
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10 Feb 2008, 10:47 am

1328

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SilverProteus
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10 Feb 2008, 10:55 am

1329

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10 Feb 2008, 1:58 pm

1330

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Tim_Tex
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10 Feb 2008, 2:47 pm

1331

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10 Feb 2008, 2:48 pm

1332

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Tim_Tex
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10 Feb 2008, 2:59 pm

1333

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Tim_Tex
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10 Feb 2008, 3:00 pm

1334

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Tim_Tex
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10 Feb 2008, 3:00 pm

1335

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Tim_Tex
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10 Feb 2008, 3:01 pm

1336

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Tim_Tex
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10 Feb 2008, 3:01 pm

1337

I'll bet this one gets tons of hype on here.

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tantopat
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10 Feb 2008, 3:05 pm

1338

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