mersenneforum.org - palindromic prime 111010111

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- - palindromic prime 111010111 (https://www.mersenneforum.org/showthread.php?t=23881)

enzocreti

2018-12-10 12:48

palindromic prime 111010111

A mathexchange user found that 111010111 divides ((2^3343663-1)*10^1006543+2^3343662-1), the concatenation of two consecutive Mersenne numbers!

enzocreti

2018-12-10 12:50

other factors

Somebody can find other factors of this number? Besides 691 and naturally 111010111

ET_	2018-12-10 13:33

[QUOTE=enzocreti;502265]Somebody can find other factors of this number? Besides 691 and naturally 111010111[/QUOTE]

Why?

enzocreti

2018-12-10 15:00

factor it

just for fun and because i guess that the next factor is a 666666666...7 prime!

ET_	2018-12-10 15:27

[QUOTE=enzocreti;502280]just for fun and because i guess that the next factor is a 666666666...7 prime![/QUOTE]

Now that's becoming interesting...

What makes you think that the next factor is "a 666666666...7 prime" ?

CRGreathouse

2018-12-10 23:15

[QUOTE=enzocreti;502280]just for fun and because i guess that the next factor is a 666666666...7 prime![/QUOTE]

If that is the case, it has more than 80,000 digits. :smile:

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