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A158848
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Prime numbers p where 2^k-p is prime, with k>6 and minimal.
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2
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67, 97, 109, 149, 167, 173, 197, 227, 233, 239, 251, 271, 283, 313, 331, 349, 373, 409, 433, 439, 499, 509, 521, 557, 563, 593, 641, 677, 743, 761, 773, 797, 827, 857, 887, 911, 941, 953, 971, 977, 983, 1013, 1019, 1021, 1039, 1051, 1129, 1171, 1237, 1279, 1291, 1297, 1321
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OFFSET
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1,1
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COMMENTS
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These are the primes removed according to algorithm of A156284 beginning with m=7.
Powers 2^m, m>=7, are not expressible as sums of two primes which are not in the sequence.
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LINKS
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FORMULA
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PROG
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(PARI) isok(p) = if (isprime(p), my(k=ceil(log(p)/log(2))); (k >= 7) && isprime(2^k-p)); \\ Michel Marcus, Jan 22 2023
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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Missing terms 773, 797, 827, 857 added by Michel Marcus, Jan 23 2023
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STATUS
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approved
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