Loading collection data...
Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
In the case of two digits, the number of digits multiplied by 1 plus ten digits multiplied by 10, is no change.
The last bomb is too bad
funny
in test case backWardsPrime2, 70207 is not a prime?