We publish our first data on the Collatz function for 10223×231172165 + 1 (#9 known megaprime) and two of its odd neighbors located at ±4.
Monthly Archives: October 2019
Collatz function data for 2^30402457 – 1 (#10 known megaprime)
We publish our first data on the Collatz function for 230402457 – 1 (#10 known megaprime) and two of its odd neighbors located at ±2.
Sequence of record 288-step delayed palindromes found
On 26 April 2019, Rob van Nobelen discovered the 23-digit number 12000700000025339936491 – the first one that takes record-breaking 288 steps to reach a final 142-digit palindrome. The previous record (261 steps) was set in 2005.
We expanded the found number to a sequence with 19353600 terms in total. This sequence currently includes all known 288-step delayed palindromes.
All results are contributed to OEIS and will be published in due course.
Collatz function data for 2^25964951 – 1 (#11 known megaprime)
We publish our first data on the Collatz function for 2^25964951 – 1 (#11 known megaprime) and two of its odd neighbors located at ±2. Continue reading
Collatz function data for 2^24036583 – 1 (#12 known megaprime)
We publish our first data on the Collatz function for 2^24036583 – 1 (#12 known megaprime) and two of its odd neighbors located at ±2. Continue reading