Inflationary primordial black holes as all dark matter

Following a new microlensing constraint on primordial black holes (PBHs) with similar to 10(20)-10(28) g [H. Niikura et al., arXiv: 1701.02151.], we revisit the idea of PBH as all dark matter (DM). We have shown that the updated observational constraints suggest the viable mass function for PBHs as all DM to have a peak at. 1020 g with a small width sigma less than or similar to 0.1, by imposing observational constraints on an extended mass function in a proper way. We have also provided an inflation model that successfully generates PBHs as all DM fulfilling this requirement.