Swept under the rug ... or into "under development" status

MJ. Smith

We have approximately 324 titles under development. 324 is the smallest untouchable square but certainly we can reach a more interesting number. So let's get these resources into "under development" status".

Pontifical Council for the Family Collection (10 vols.)

Daniel & Revelation Committee Series (DARCOM) (7 vols.)

Christian Belief for Everyone (2 vols.) by Alister McGrath

Aquinas' Commentary on the Prophet Isaiah: English and Latin (2 vols.)

How Not to Foul Up the Training of Your Children by Albert N. Martin

Eerdmans Commentary Collection (13 vols.)

The Hill Ministry Study Courses (2 vols.) by Bob Warren

Coleccion Puritana II

TransforMission: Making Disciples through Short Term Missions

Goal is the much more interesting 333 = 101 + 11 + 2 + 3 + 41 + 5 + 61 + 7 + 83 + 19, where each term is the smallest prime containing 0, 1, 2, ..., and 9, respectively

Rosie Perera

Goal is the much more interesting 333 = 101 + 11 + 2 + 3 + 41 + 5 + 61 + 7 + 83 + 19, where each term is the smallest prime containing 0, 1, 2, ..., and 9, respectively

Love it! I love interesting numbers. I had not heard of untouchable numbers, or had forgotten about them. I went to an elite summer math camp when I was in high school and we played with all sorts of fun stuff like this.

In searching for "smallest untouchable square" I came across a fun website: http://www.numbergossip.com/ 

My favorite number is 17 (Properties of 17). But another favorite is 1729:

1729 is known as the Hardy–Ramanujan number after a famous anecdote of the British mathematician G. H. Hardy regarding a visit to the hospital to see the Indian mathematician Srinivasa Ramanujan. In Hardy's words:^[1][2][3]

“

I remember once going to see him when he was ill at Putney. I had ridden in taxi cab number 1729 and remarked that the number seemed to me rather a dull one, and that I hoped it was not an unfavorable omen. "No," he replied, "it is a very interesting number; it is the smallest number expressible as the sum of two cubes in two different ways."

http://www.yellowpigs.net/index.php?topic=yellowpigs/YP_seventeen