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Old 2020-01-31, 12:39   #1
devarajkandadai's Avatar
May 2004

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Default Elliptic Carmichael numbers

I had a conjecture that the above (defined below) exist.
A set of 2 or more Carmichael numbers in which the smallest
and largest prime factors are common but the intervening
prime factors are different.
15841 = 7*31*73
126217 =7*13*19*73
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