I have The Penguin dictionary of Curious and also Interesting numbers by David Wells (1987) and in this edition, the smallest whole number not detailed is 43. However, of course, that becomes an amazing number by the mere reality that that is the very first number not provided as curious and interesting.

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The next number not provided is 51, yet that becomes exciting by gift the first genuinely not exciting number. This could proceed to infinity.

**Janet Gunn** Nokesville, Virginia, US

Suppose there is a “first uninteresting number”. That is, in itself, an interesting property. Therefore, there can’t be a “first uninteresting number”.

A story around mathematicians Srinivasa Ramanujan and Godfrey Harold continuous reveals that the interesting aspect of a number isn’t always obvious. Hardy had ridden in London taxi number 1729 come visit Ramanujan and also said the it was a “dull” number. Ramanujan responded: “No, that is a very interesting number. That is the the smallest number expressible as the amount of two cubes in two different ways.”

“If there space 23 people in a room, the possibilities of 2 of them having actually the same birthday is better than 50 every cent”

**Herman D’Hondt** Mascot, new South Wales, Australia

With a little bit that effort, interesting facts have the right to be uncovered for every number. It just depends top top what criteria you decide to use. For example, 4 is the smallest variety of colours needed to colour any map. 3 is the number of spatial dimensions we have the right to perceive.

If there room 23 civilization in a room, the chances of two of them having the same birthday is better than 50 per cent. And also 86,400 is the number of seconds in a day. The list goes on.

**Ian Paget** Crundale, Pembrokeshire, UK

Surely the crown the boring number would have to be awarded come the number 1.

It is so bland that as soon as multiplied by itself it renders 1, when split by chin it is 1. Indeed, every number when split by itself is 1. The square source of 1 is 1 and also anything raised to the strength of 1 doesn’t change. The is a divisor that all various other numbers and when offered as a tangent to produce the boring 45 degrees.

One find oneself wondering climate whether the plenty of properties that oneness that 1 make it the most exciting number.

**Brian Horton** West Launceston, Tasmania, Australia

The term “interesting” have the right to mean different things to various people, so part mathematicians use a strict meaning of “interesting” for this reason that just numbers appearing on particular lists are thought about officially interesting.

In 2014, the number 247 to be the shortest number v no Wikipedia page. However, that now has its own page, so this form of meaning invariably method that over time the shortest uninteresting number will gradually be a larger and also larger value.

If we usage the looser definition of interesting and also agree the all optimistic integers are interesting, then it follows that all an unfavorable integers must also be interesting because of their confident counterpart. Therefore, every non-integer reasonable numbers need to be interesting due to the fact that they room expressed as the proportion of 2 integers, both the which should be interesting.

Irrational number can’t be expressed together the department of integers, but because they proceed indefinitely, castle contain every integer somewhere in the decimal sequence, for this reason are very interesting.

Finally, all imaginary numbers are fascinating, simply by being imaginary.

**Andrew Taubman** kings Park, new South Wales, Australia

There can be no smallest uninteresting number. As shortly as friend designate one, it becomes interesting; then, being no much longer boring, it is no much longer interesting. You finish up in a state the quantum uncertainty, whereby the number in question is simultaneously boring and interesting.

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