Yes, these are technically RSA numbers (they are semiprimes ie, product of two prime numbers). However, they are much smaller. THe game lets you set the size (and the radix!) but due to the "hardness" of "RSA // factoring semiprimes" you will not be able to progress beyond the easier levels.

Oh well... Too bad! But still a lot of fun and an interesting visual representation of a multiplication, carry adder circruit.