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Search: id:A125034
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| A125034 |
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Primes of the form 2^n - 69. |
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+0
2
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| 59, 443, 1979, 4027, 8123, 524219, 1048507, 2097083, 8388539, 2147483579, 34359738299, 137438953403, 35184372088763, 144115188075855803, 9444732965739290427323, 19342813113834066795298747
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OFFSET
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1,1
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COMMENT
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Corresponding n's are 7,9,11,12,13,19,20,21,23,31,35,37,45,57,73,84,89. Cf. A124977.
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EXAMPLE
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2^7-69=59 (prime), 2^9-69=443 (prime), 2^11-69=1979(prime).
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MATHEMATICA
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Select[Range[7, 100], PrimeQ[2^#-69]&]
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CROSSREFS
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Cf. A124977.
Sequence in context: A118624 A142604 A071771 this_sequence A140024 A142363 A093259
Adjacent sequences: A125031 A125032 A125033 this_sequence A125035 A125036 A125037
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KEYWORD
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nonn
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AUTHOR
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Zak Seidov (zakseidov(AT)yahoo.com), Nov 17 2006
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