Post
Topic
Board Development & Technical Discussion
Re: What is the upper limit of 'm' and 'n' for m-of-n transactions?
by
scintill
on 24/05/2013, 22:08:46 UTC
M-of-N are now a standard Tx, and thus relayed/mined.

See here:

https://en.bitcoin.it/wiki/BIP_0011
https://en.bitcoin.it/wiki/BIP_0016

Only up to x-of-3 are standard.  As mentioned earlier 20 is the hard limit, but only up to 3 is by default relayed and mined.