Theorem of the Day
The mathematical (and other) thoughts of a (now retired) math teacher,
The 128th day of the year; 128 is The largest known even number that can be expressed as the sum of two primes in exactly three ways. (Find them) *Prime Curios How many smaller numbers (and which) are there that can be so expressed?
But, it can not be expressed as the sum of distinct squares, for any number of squares. And it is the largest such number, ever.... no, I mean EVER. The very last. (Surprisingly, there are only 31 numbers that can not be expressed as the sum of distinct squares. ) 128 can be expressed by a combination of its digits with mathematical operators thus 128 = 2 8 - 1 , making it a Friedman number in base 10 (Friedman numbers are named after Erich Friedman, as of 2013 an Associate Professor of Mathematics and
Theorem of the Day