We discuss formation of dark matter ( DM ) mini-halos around primordial black holes ( PBHs ) and its implication on DM direct detection experiments .
Motivated by LIGO observations , we take f _ { \text { DM } } \simeq 0.01 as the fraction of DM in PBHs with masses 10 M _ { \odot } -70 M _ { \odot } .
Under these conditions , previous computations show PBHs may capture more than half of the DM background at the time of the first galaxies .
Our analytical estimates suggest that a significant part of the DM background ends up localized as mini-halos around PBHs inside galactic halos is plausible .
High-resolution simulations are encouraged .
If the proposed scenario is realized , DM direct detection experiments would be compromised .