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Old 2005-12-09, 22:23   #40
ValerieVonck
 
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Mar 2004
Belgium

33·31 Posts
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Tested to k=80k

3250995*2^53311 - 1 is prime! 16055 digits
3250995*2^60917 - 1 is prime! 18345 digits
3250995*2^71729 - 1 is prime! 21600 digits
3250995*2^76722 - 1 is prime! 23103 digits


--
Repasting the other primes with their lenght:

Code:
    3250995*2^12665 - 1 is prime!   3820 digits
    3250995*2^13757 - 1 is prime!   4148 digits
    3250995*2^14730 - 1 is prime!   4441 digits
    3250995*2^18772 - 1 is prime!   5658 digits
    3250995*2^18986 - 1 is prime!   5722 digits
    3250995*2^23930 - 1 is prime!   7211 digits
    3250995*2^26026 - 1 is prime!   7842 digits
    3250995*2^27348 - 1 is prime!   8240 digits
    3250995*2^28051 - 1 is prime!   8451 digits
    3250995*2^31445 - 1 is prime!   9473 digits
    3250995*2^34123 - 1 is prime!  10279 digits
    3250995*2^36262 - 1 is prime!  10923 digits
    3250995*2^38799 - 1 is prime!  11687 digits
    3250995*2^40595 - 1 is prime!  12227 digits
    3250995*2^41002 - 1 is prime!  12350 digits
    3250995*2^42615 - 1 is prime!  12835 digits

    3250995*2^45965 - 1 is prime!  13844 digits
    3250995*2^47757 - 1 is prime!  14383 digits
    3250995*2^48509 - 1 is prime!  14610 digits
    3250995*2^48859 - 1 is prime!  14715 digits

Last fiddled with by ValerieVonck on 2005-12-09 at 22:23
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