# Prime number that are recursively made up of other prime number — what is this called

I've noticed that some prime number are composed entirely of other prime numbers

for example -- some have parents on the left hand side (all the numbers below are prime):

59393339
5939333
593933
59393
5939
59
5


Others for example -- some have parents on the right hand side (all the numbers below are prime):

633396997
33396997
3396997
396997
96997
6997
997
97
7


Others have parents on both side, for example:

739397 on the right hand side
39397
9397
397
97
7

739397 on the left hand side
73939
7393
739
73
7


I'd like to know what these type of Prime numbers are called?

Thanks.