Earlier today the US Treasury released its latest Borrowing Estimates for Q1 and Q2 of calendar 2013. In brief: in the ended quarter, the Treasury borrowed some $297 billion, $9 billion more than the $288 billion previously predicted. One reason for this miss is the build up of cash in the quarter which ended at $93 billion instead of the $60 billion initially expected. However the extra cash buffer will be used in Q1, in which Treasury now expects to burn some $63 billion instead of the $30 billion forecast before, ending the quarter with $30 billion in cash. To get there, Treasury will need to raise some $331 billion in debt in January through March, just shy of the prior estimate of $342 billion in funding need in this quarter. And since the US debt to the penny counter has been stopped since the debt ceiling breach, and is still at the December 31, 2012 debt limit of $16.432 billion, this means we now know, approximately, that US debt on March 31, 2013 will be $16,763,730,050,569.10, give or take a dime, or said otherwise, assuming a generous 1% sequential growth in Q1 GDP, a 105% debt/GDP in two months.