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Roman Maeder

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Lucky palindromes: efficient search and results &[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/7ae6465f-2275-45a1-9032-6f36e6125afd AUTHOR: Roman Maeder 1381VIEWS 0REPLIES 9 months ago
Lucky Palindromes: when do prime factors of palindromes make palindromes? There are not that many. There are just two examples with 17 digits, 10022212521222001 == 100111001 100111001 12323244744232321 == 111010111 111010111 none with 18 digits (there's just a single, very lucky, palindrome with 18 digits) ... AUTHOR: Vitaliy Kaurov 2443VIEWS 10REPLIES BY: Roman Maeder 10 months ago
Debugging and performance tuning for data parallelism &[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/bcaad1e3-6a91-4b39-8aec-c829b4e94d11 AUTHOR: Roman Maeder 2356VIEWS 1REPLIES 1 year ago
A prime pencil: truncatable primes The number of right-truncatable primes for bases up to 42 is given in A076586 in [OEIS][1]. Their number is quite a bit smaller than the right-truncatable ones. [1]: http://oeis.org/A076586 AUTHOR: Roman Maeder 23925VIEWS 11REPLIES BY: Roman Maeder 5 years ago
Clone Puzzle: Pebbling the Chessboard The clone puzzle was recently popularized by a great YouTube presentation by Zvezdelina Stankova on the Numberphile channel ([https://www.youtube.com/watch?v=lFQGSGsXbXE][1]). It serves as a good examples of some key concepts in Mathematics: -... AUTHOR: Roman Maeder 8907VIEWS 0REPLIES 6 years ago