A166501 -id:A166501 - cp's OEIS frontend

A235147 Primes p such that (p reversed)+3 is also a prime.

2, 41, 43, 61, 67, 83, 89, 401, 409, 421, 431, 433, 439, 443, 449, 457, 461, 463, 479, 487, 491, 499, 601, 607, 617, 619, 631, 641, 643, 653, 673, 683, 691, 809, 821, 823, 839, 857, 881, 4027, 4057, 4091, 4093, 4099, 4111, 4153, 4157, 4177, 4217, 4219, 4229

Offset: 1

Vincenzo Librandi, Jan 04 2014

			43 is in the sequence because 34+3=37 is prime.

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Cf. A165446, A166501, A167460, A167466, A167473.

[p: p in PrimesUpTo(6000) | IsPrime(q+3) where q is Seqint(Reverse(Intseq(p)))];

Select[Prime[Range[6000]], PrimeQ[FromDigits[Reverse[IntegerDigits[#]]] + 3]&]

A235148 Primes p such that (p reversed) + 5 is also a prime.

Original entry on oeis.org

2, 23, 29, 41, 47, 83, 89, 227, 233, 239, 251, 257, 263, 269, 293, 401, 419, 431, 443, 467, 491, 641, 647, 827, 863, 881, 2027, 2063, 2099, 2111, 2153, 2207, 2273, 2297, 2339, 2357, 2441, 2459, 2543, 2609, 2687, 2693, 2699, 2729, 2801, 2819, 2879, 2927, 2939, 2963

Offset: 1

Vincenzo Librandi, Jan 04 2014

			47 is in the sequence because 74+5=79 is prime.

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Cf. A165446, A166501, A167460, A167466, A167473.

[p: p in PrimesUpTo(6000) | IsPrime(q + 5) where q is Seqint(Reverse(Intseq(p)))];

Select[Prime[Range[6000]], PrimeQ[FromDigits[Reverse[IntegerDigits[#]]] + 5]&]

A235149 Primes p such that (p reversed) + 7 is also a prime.

Original entry on oeis.org

43, 61, 67, 229, 241, 271, 283, 409, 421, 439, 457, 601, 643, 661, 673, 2011, 2017, 2029, 2113, 2131, 2161, 2179, 2221, 2269, 2287, 2293, 2341, 2389, 2437, 2467, 2521, 2551, 2557, 2707, 2749, 2791, 2803, 2833, 2857, 4003, 4027, 4051, 4093, 4129, 4159, 4201, 4339, 4357

Offset: 1

Vincenzo Librandi, Jan 04 2014

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Cf. A165446, A166501, A167460, A167466, A167473.

[p: p in PrimesUpTo(6000) | IsPrime(q+7) where q is Seqint(Reverse(Intseq(p)))];

Select[Prime[Range[6000]], PrimeQ[FromDigits[Reverse[IntegerDigits[#]]] + 7]&]
Select[Prime[Range[600]],PrimeQ[IntegerReverse[#]+7]&] (* Harvey P. Dale, May 20 2023 *)

A235150 Primes p such that (p reversed) + 9 is also a prime.

Original entry on oeis.org

2, 23, 29, 41, 43, 47, 83, 89, 223, 239, 241, 257, 269, 271, 281, 293, 401, 443, 449, 461, 463, 467, 479, 811, 821, 823, 829, 839, 853, 859, 877, 881, 883, 887, 2003, 2027, 2039, 2053, 2081, 2089, 2113, 2129, 2131, 2137, 2161, 2179, 2221, 2237, 2251, 2269, 2281

Offset: 1

Vincenzo Librandi, Jan 04 2014

			83 is in the sequence because 38+9=47 is prime.

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Cf. A165446, A166501, A167460, A167466, A167473.

[p: p in PrimesUpTo(4000) | IsPrime(q+9) where q is Seqint(Reverse(Intseq(p)))];

Select[Prime[Range[4000]], PrimeQ[FromDigits[Reverse[IntegerDigits[#]]] + 9]&]

cp's OEIS Frontend

A235147 Primes p such that (p reversed)+3 is also a prime.

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Magma

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A235148 Primes p such that (p reversed) + 5 is also a prime.

Views

Author

Keywords

Examples

Links

Crossrefs

Programs

Magma

Mathematica

A235149 Primes p such that (p reversed) + 7 is also a prime.

Views

Author

Keywords

Links

Crossrefs

Programs

Magma

Mathematica

A235150 Primes p such that (p reversed) + 9 is also a prime.

Views

Author

Keywords

Examples

Links

Crossrefs

Programs

Magma

Mathematica