I'm not so sure about it being a Fukuryu but I agree with calling it an Astrophytum myriostigma.

A. myriostigma - the original with flecks.

Yep, myriostigma, but not Fukuryu.

Here's my A. myriostigma Fukuryu...

This type has a lot more bumps and wrinkles than yours. They can have white flecks, or not have any.

and here's my other myriostigma that's more like yours. Actually mine is a quadricostatum, because it has 4 ribs, not the usual 5.

Thank you all. In the past I saw article about myriostigma fukuryu type A and I thought that it looks like mine.

http://www.cactus-art.biz/schede/ASTROPHYTUM/Astrophytum_myriostigma/Astrophytum_myriostigma_fukuryu_type_A/Astrophytum_myriostigma_fukuryu_type_A.htm