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Search: id:A145742
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| A145742 |
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Composite numbers n such that all 10 numbers n+4*m^2 for m=1,2,...,10 are prime. |
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+0
3
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| 143473, 2821813, 3171877, 27439003, 95771533, 107832187, 174499873, 315915517, 438561313, 761271373, 1010315923, 1083101167, 1247119687, 1272171217, 1494582637, 1540272427, 2760699643, 3205014607, 3615583147, 3636010807
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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There is no further term up to 2*10^8.
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EXAMPLE
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174499873 is composite and all 10 numbers 174499873+4m^2 for m=1,2,...,10 are prime.
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CROSSREFS
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Cf. A145741, A145743.
Sequence in context: A144504 A146754 A004042 this_sequence A133324 A110084 A004670
Adjacent sequences: A145739 A145740 A145741 this_sequence A145743 A145744 A145745
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KEYWORD
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nonn
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AUTHOR
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Farideh Firoozbakht (mymontain(AT)yahoo.com), Oct 17 2008
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EXTENSIONS
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a(8)-a(20) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Nov 17 2008
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