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#89 |
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Mar 2018
21216 Posts |
51456 divides pg(541456)-pg(51456) with pg(541456) and pg(51456) both probable primes is that coincidence?
Last fiddled with by enzocreti on 2018-12-18 at 14:41 |
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#90 |
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"Forget I exist"
Jul 2009
Dumbassville
26×131 Posts |
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#91 |
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Mar 2018
2·5·53 Posts |
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#92 |
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Banned
"Luigi"
Aug 2002
Team Italia
10010110011112 Posts |
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#93 |
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Aug 2006
597910 Posts |
9091 is the unique prime whose reciprocal has period 10. It is -- wait for it -- 46 mod 201. Coincidence? I think not.
Last fiddled with by CRGreathouse on 2018-12-18 at 17:36 Reason: only known -> unique |
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#94 |
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Mar 2018
2×5×53 Posts |
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#95 |
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Banned
"Luigi"
Aug 2002
Team Italia
113178 Posts |
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#96 |
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"Forget I exist"
Jul 2009
Dumbassville
20C016 Posts |
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#97 |
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Mar 2018
2·5·53 Posts |
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#98 |
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Mar 2018
2×5×53 Posts |
Ma io no ho costruito nulla...quei primi nascono naturalmente dalla concatenazione in base dieci di due concsecutivi numeri di Mersenne...innanzitutto mi pare quantomeno curioso che uno dei primi sia pg(51456) e l'altro pg(541456) con quel 4 inserito in mezzo. E poi perché la differenza di questi due primi è proprio un multiplo di 67?
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#99 |
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"Forget I exist"
Jul 2009
Dumbassville
26×131 Posts |
It can be a difference that's a multiple of basically any natural number you want.
No if the difference wouldn't be a multiple of 67, then 51456 would not divide the difference Last fiddled with by enzocreti on 2018-12-18 at 18:45 |
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