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Search: id:A101998
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| A101998 |
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Numbers 32n-1 such that 4n-1, 8n-1, 16n-1, 32n-1 and 64n-1 are primes. |
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6
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| 1439, 429119, 507359, 1014719, 1017119, 2034239, 2368799, 2727359, 4858559, 6484319, 8553599, 8981279, 12789599, 12972959, 14567999, 14929919, 15301439, 15367679, 16362719, 17107199, 17263199, 17962559, 18224639, 18857759
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OFFSET
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1,1
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EXAMPLE
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4*45-1=179, 8*45-1=359, 16*45-1=719, 32*45-1=1439 and 64*45-1=2879 are primes, so the first entry is 1439.
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CROSSREFS
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Cf. A101994, A101995, A101996, A101997, A101999.
Sequence in context: A143475 A101798 A081426 this_sequence A063846 A078095 A061221
Adjacent sequences: A101995 A101996 A101997 this_sequence A101999 A102000 A102001
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KEYWORD
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easy,nonn
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AUTHOR
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Douglas Stones (dssto1(AT)student.monash.edu.au), Dec 23 2004
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