# What's special about the number?

Gold Member
Without looking it up, tell me what is so special about the number 232,792,560.

Also, explain your process, I want to know how you people think.

Related General Discussion News on Phys.org
disregardthat
232+560=792

Gold Member
That's not quite what I was looking for. I'm looking for a property that is unique to this number, or that this number is the first to accomplish.

Its the lowest number divisible by 1-20

Gold Member
Yep, that's correct. How did you get to that answer?

Its the answer to question number 5 on Project Euler. so i had solved for it before.

DaveC426913
Gold Member
I want to know how you people think.
That's not quite what I was looking for.
Odd. You ask for the thinking process that goes into an answer, but then reject processes that don't lead to the answer you like.

How much can one learn if one only accepts answers one expects?

232+560=792
Maybe I am a glass half empty person. I saw it as 792-232=560.

Gold Member
Odd. You ask for the thinking process that goes into an answer, but then reject processes that don't lead to the answer you like.

How much can one learn if one only accepts answers one expects?
I stand chastised. Sorry, Jarle.

Its the lowest number divisible by 1-20
It's the lowest number divisible by 1-21 and by 1-22 as well.

This might be quirky but it is how I first thought about it

232,792,560

2+3+2 =7
7+9+2=18 --> 1+8=9
5+6+0=11 --> 1+1=2

which when assembled is 792

dav2008
Gold Member
It's also the first number to be divisible by 116,396,280

gb7nash
Homework Helper
It's a really big number. That seems pretty special to me.

It's also the first number to be divisible by 116,396,280
Wrong its the second number. a number first divides itself ;)