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Old 2020-10-07, 15:40   #2
axn
 
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Jun 2003

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Quote:
Originally Posted by ATH View Post
To be a factor the prime q (mod 120) must be equal to one of these 16 values:
1 7 17 23 31 41 47 49 71 73 79 89 97 103 113 119
which can be simplified to q mod 8 = 1 or 7
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