Please double-check me (easy, important?)

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In summary, the conversation is about verifying whether the number N = 252,505,670,761 is a strong pseudoprime to the bases 2, 3, 5, and 4086253. The results indicate that it is a strong pseudoprime to these bases except for 7, and this disproves Jaeschke's claim of \chi_{(2, 3, 5, 4086253)}=736775510329.
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Please double-check me! (checked)

I'm not entirely sure of my math here, but this should be a simple calculation. I want to make sure I'm right, though, so I'm posting here.

To which of the following bases is N = 252,505,670,761 a strong pseudoprime? {2, 3, 5, 7, 4086253}
 
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It appears to be a strong pseudoprime to the bases 2, 3, 5, and 4086253 but not 7.
 
  • #3
shmoe said:
It appears to be a strong pseudoprime to the bases 2, 3, 5, and 4086253 but not 7.

Excellent, those were my results. (The 7 was just a double-check and doesn't matter as the others do.) This shows, minimally, that Jaeschke's claim [tex]\chi_{(2, 3, 5, 4086253)}=736775510329[/tex] is wrong.
http://math.crg4.com/primes.html
 
  • #4
Yup Yup Yup
 

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