cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-6 of 6 results.

A074834 Primes whose base 4 reversal is also prime.

Original entry on oeis.org

2, 3, 5, 7, 13, 17, 23, 29, 31, 53, 59, 61, 67, 73, 79, 83, 89, 97, 101, 107, 193, 197, 199, 211, 233, 239, 241, 251, 257, 269, 277, 281, 293, 311, 313, 337, 353, 367, 373, 383, 397, 401, 409, 419, 433, 443, 449, 457, 461, 467, 487, 491, 499, 509, 787, 797, 809
Offset: 1

Views

Author

Robert G. Wilson v, Sep 09 2002

Keywords

Links

Crossrefs

Cf. A007500, A074832, A074833, A075235, A075236, A075237, A075238, A075239.

Programs

  • Mathematica
    Prime[ Select[ Range[140], PrimeQ[ FromDigits[ Reverse[ IntegerDigits[ Prime[ # ], 4]], 4]] &]]

A075235 Primes whose base 5 reversal is also prime.

Original entry on oeis.org

2, 3, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 47, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 149, 151, 157, 163, 167, 191, 193, 211, 223, 227, 229, 233, 239, 251, 257, 269, 271, 277, 281, 293, 317, 331, 337, 347, 349, 353, 359, 367
Offset: 1

Views

Author

Robert G. Wilson v, Sep 09 2002

Keywords

Links

Crossrefs

Cf. A007500, A074832, A074833, A074834, A075236, A075237, A075238, A075239.

Programs

  • Mathematica
    Prime[ Select[ Range[100], PrimeQ[ FromDigits[ Reverse[ IntegerDigits[ Prime[ # ], 5]], 5]] &]]

A075236 Primes whose base 6 reversal is also prime.

Original entry on oeis.org

2, 3, 5, 7, 11, 31, 37, 41, 43, 53, 59, 61, 67, 71, 181, 191, 193, 197, 199, 211, 227, 233, 257, 263, 271, 277, 281, 293, 307, 311, 313, 317, 331, 337, 349, 359, 367, 373, 379, 383, 389, 431, 1087, 1093, 1103, 1109, 1117, 1123, 1153, 1187, 1193, 1201, 1213
Offset: 1

Views

Author

Robert G. Wilson v, Sep 09 2002

Keywords

Links

Crossrefs

Cf. A007500, A074832, A074833, A074834, A075235, A075237, A075238, A075239.

Programs

  • Mathematica
    Prime[ Select[ Range[200], PrimeQ[ FromDigits[ Reverse[ IntegerDigits[ Prime[ # ], 6]], 6]] &]]
Select[Prime[Range[200]],PrimeQ[FromDigits[Reverse[IntegerDigits[#,6]],6]]&] (* Harvey P. Dale, Oct 12 2023 *)

A075237 Primes whose base 7 reversal is also prime.

Original entry on oeis.org

2, 3, 5, 11, 13, 17, 19, 23, 29, 37, 41, 43, 47, 53, 67, 71, 79, 89, 97, 101, 107, 127, 137, 139, 149, 151, 157, 167, 173, 179, 193, 197, 199, 211, 227, 229, 233, 241, 257, 269, 271, 277, 281, 307, 311, 331, 337, 347, 373, 389, 397, 401, 419, 421, 433, 439, 443
Offset: 1

Views

Author

Robert G. Wilson v, Sep 09 2002

Keywords

Links

Crossrefs

Cf. A007500, A074832, A074833, A074834, A075235, A075236, A075238, A075239.

Programs

  • Mathematica
    Prime[ Select[ Range[100], PrimeQ[ FromDigits[ Reverse[ IntegerDigits[ Prime[ # ], 7]], 7]] &]]

A075238 Primes whose base 8 reversal is also prime.

Original entry on oeis.org

2, 3, 5, 7, 13, 29, 31, 41, 43, 47, 59, 61, 67, 71, 73, 79, 89, 97, 101, 107, 113, 193, 211, 227, 233, 239, 251, 349, 353, 373, 383, 449, 457, 463, 479, 487, 491, 503, 509, 521, 523, 541, 577, 587, 643, 677, 683, 719, 733, 751, 757, 773, 787, 811, 823, 827, 829
Offset: 1

Views

Author

Robert G. Wilson v, Sep 09 2002

Keywords

Links

Crossrefs

Cf. A007500, A074832, A074833, A074834, A075235, A075236, A075237, A075239.

Programs

  • Mathematica
    Prime[ Select[ Range[150], PrimeQ[ FromDigits[ Reverse[ IntegerDigits[ Prime[ # ], 8]], 8]] &]]
Select[Prime[Range[200]],PrimeQ[IntegerReverse[#,8]]&] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Jun 09 2017 *)

A075239 Primes whose base 9 reversal is also prime.

Original entry on oeis.org

2, 3, 5, 7, 11, 13, 17, 19, 23, 37, 43, 47, 67, 71, 73, 79, 83, 97, 101, 109, 113, 127, 139, 151, 157, 163, 173, 179, 181, 191, 193, 197, 227, 229, 239, 241, 331, 337, 353, 367, 373, 379, 383, 389, 397, 419, 433, 439, 457, 463, 479, 571, 577, 593, 599, 601, 607
Offset: 1

Views

Author

Robert G. Wilson v, Sep 09 2002

Keywords

Links

Crossrefs

Cf. A007500, A074832, A074833, A074834, A075235, A075236, A075237, A075238.

Programs

  • Mathematica
    Prime[ Select[ Range[115], PrimeQ[ FromDigits[ Reverse[ IntegerDigits[ Prime[ # ], 9]], 9]] &]]
Showing 1-6 of 6 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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