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A317136
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Extended Chernick Carmichael numbers that are the product of 4 or more distinct prime factors.
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1
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63973, 192739365541, 461574735553, 10028704049893, 84154807001953, 197531244744661, 973694665856161, 3060522900274753, 3183276534603733, 11861640972220321, 26862493078871893, 51516243805731301, 190276732600534693, 245840587068477781, 386096840467598593
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OFFSET
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1,1
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COMMENTS
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Numbers of the form: (6*m + 1) * (12*m + 1) * Product_{i=1..k-2} (9 * 2^i * m + 1), where k >= 4, with the condition that each of the factors is prime and that m is divisible by 2^(k-4).
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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