What is the biggest even number N that can't be written as a sum of odd composite numbers?

Bonus: Find another feature unique to N.

(In reply to re(2): computer solution and tidbits from a reference by Charlie)

You are correct.

Not usurping 38's place, but a form that alphabetically follows
xxxviii is xxxviij. The swash variant of "j" for "i" used for
the final "i" in instances where lower-case letters are used for the numerals is still found in modern use.

Posted by Dej Mar on 2018-07-31 10:16:10