richie
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29 Dec 2007, 3:40 pm
The fifth and smallest Prime in the Primes of the form 36n²-810n+2753 series.
The ninth in the Primes of the form n²+n+17. series.
89 is a Fibonacci Number with other unusual properties.
91=13X7
NoNameRockBand
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29 Dec 2007, 3:57 pm
richie
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29 Dec 2007, 4:05 pm
NoNameRockBand
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29 Dec 2007, 4:07 pm
richie
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29 Dec 2007, 4:25 pm
richie
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29 Dec 2007, 4:26 pm
"Click and ye shall find....."
An "emirp" of 79.
The fourth Prime in the Primes of the form n³+n²+17
The numbers 97, 907, 9007, 90007 and 900007 are happy primes. However, 9000007 (read as nine million seven) is composite and has the factorisation 277 × 32491.
Last edited by richie on 29 Dec 2007, 4:44 pm, edited 8 times in total.
29 Dec 2007, 4:29 pm
29 Dec 2007, 4:42 pm
99
mmmmmmmmm 
richie
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29 Dec 2007, 4:46 pm
100 I'm almost halfway there.... 
richie
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29 Dec 2007, 4:56 pm
29 Dec 2007, 6:48 pm
102
no fancy prime - so I take that one
richie: I'm slowly getting the impression that you enjoy this thread ... already looking forward to those 6digit prime series 
richie
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29 Dec 2007, 7:03 pm
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29 Dec 2007, 9:46 pm
richie
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29 Dec 2007, 10:49 pm
iamnotaparakeet
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