<s>
Twin	B-Operating_System
Prime	I-Operating_System
Search	I-Operating_System
(	O
TPS	O
)	O
is	O
a	O
volunteer	B-Operating_System
computing	I-Operating_System
project	O
that	O
looks	O
for	O
large	O
twin	O
primes	O
.	O
</s>
<s>
It	O
uses	O
the	O
programs	O
LLR	O
(	O
for	O
primality	B-Algorithm
testing	I-Algorithm
)	O
and	O
NewPGen	O
(	O
for	O
sieving	O
)	O
.	O
</s>
<s>
The	O
project	O
worked	O
in	O
collaboration	O
with	O
PrimeGrid	B-Operating_System
,	O
which	O
did	O
most	O
of	O
the	O
LLR	O
tests	O
.	O
</s>
