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Huge Cullen prime discovered ??

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  • Jean Penné
    Hmmmmm... 3 | 1562533*2^6250134-1, but what for 1562533*2^6250134+1 ? At first sight, this Cullen candidate has no small divisor... Mr Karsten Haesslich, I
    Message 1 of 4 , Nov 14, 2007
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      Hmmmmm...

      3 | 1562533*2^6250134-1, but what for 1562533*2^6250134+1 ?

      At first sight, this Cullen candidate has no small divisor...

      Mr Karsten Haesslich, I hope you made a typo while posting this result
      to Chris Caldwell !

      Regards,
      Jean
    • Paul Underwood
      ... I guess this is an arithmetical error, and the number should be something like: woodall(3125066). This would fit in with PrimeGrid s current testing
      Message 2 of 4 , Nov 14, 2007
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        --- In primenumbers@yahoogroups.com, Jean Penné <jpenne@...> wrote:
        >
        > Hmmmmm...
        >
        > 3 | 1562533*2^6250134-1, but what for 1562533*2^6250134+1 ?
        >
        > At first sight, this Cullen candidate has no small divisor...
        >
        > Mr Karsten Haesslich, I hope you made a typo while posting this result
        > to Chris Caldwell !
        >

        I guess this is an arithmetical error, and the number should be
        something like: woodall(3125066). This would fit in with PrimeGrid's
        current testing window,

        :-)

        Paul
      • Jean Penné
        If I submit the posted candidate to LLR, I get immediatly that : 1562533*2^6250134-1 has a small factor : 3 !! So, if this number has really been tested using
        Message 3 of 4 , Nov 14, 2007
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          If I submit the posted candidate to LLR, I get immediatly that :

          1562533*2^6250134-1 has a small factor : 3 !!

          So, if this number has really been tested using LLR (and not a smaller
          one...), a false positive seems to be excluded...

          Jean

          --- In primenumbers@yahoogroups.com, "Paul Underwood"
          <paulunderwood@...> wrote:
          >
          > --- In primenumbers@yahoogroups.com, Jean Penné <jpenne@> wrote:
          > >
          > > Hmmmmm...
          > >
          > > 3 | 1562533*2^6250134-1, but what for 1562533*2^6250134+1 ?
          > >
          > > At first sight, this Cullen candidate has no small divisor...
          > >
          > > Mr Karsten Haesslich, I hope you made a typo while posting this result
          > > to Chris Caldwell !
          > >
          >
          > I guess this is an arithmetical error, and the number should be
          > something like: woodall(3125066). This would fit in with PrimeGrid's
          > current testing window,
          >
          > :-)
          >
          > Paul
          >
        • Jean Penné
          Seeing the second red line on the status page : 5345289*2^5345289-1 1609100 L498 Nov 2007 Woodall I am now almost convinced there are hoaxes... Sorry for him,
          Message 4 of 4 , Nov 14, 2007
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            Seeing the second red line on the status page :

            5345289*2^5345289-1 1609100 L498 Nov 2007 Woodall

            I am now almost convinced there are hoaxes...

            Sorry for him, and for me!

            --- In primenumbers@yahoogroups.com, Jean Penné <jpenne@...> wrote:
            >
            > If I submit the posted candidate to LLR, I get immediatly that :
            >
            > 1562533*2^6250134-1 has a small factor : 3 !!
            >
            > So, if this number has really been tested using LLR (and not a smaller
            > one...), a false positive seems to be excluded...
            >
            > Jean
            >
            > --- In primenumbers@yahoogroups.com, "Paul Underwood"
            > <paulunderwood@> wrote:
            > >
            > > --- In primenumbers@yahoogroups.com, Jean Penné <jpenne@> wrote:
            > > >
            > > > Hmmmmm...
            > > >
            > > > 3 | 1562533*2^6250134-1, but what for 1562533*2^6250134+1 ?
            > > >
            > > > At first sight, this Cullen candidate has no small divisor...
            > > >
            > > > Mr Karsten Haesslich, I hope you made a typo while posting this
            result
            > > > to Chris Caldwell !
            > > >
            > >
            > > I guess this is an arithmetical error, and the number should be
            > > something like: woodall(3125066). This would fit in with PrimeGrid's
            > > current testing window,
            > >
            > > :-)
            > >
            > > Paul
            > >
            >
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