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-rw-r--r--games/factor/factor.69
1 files changed, 7 insertions, 2 deletions
diff --git a/games/factor/factor.6 b/games/factor/factor.6
index a4d35e9..ba82f14 100644
--- a/games/factor/factor.6
+++ b/games/factor/factor.6
@@ -89,8 +89,7 @@ The
value must not be greater than the maximum.
The default and maximum value of
.Ar stop
-is 4294967295 on 32-bit architectures
-and 18446744073709551615 on 64-bit ones.
+is 3825123056546413050.
.Pp
When the
.Nm primes
@@ -120,3 +119,9 @@ cannot handle the
factor list,
.Nm primes
will not get you a world record.
+.Pp
+.Nm primes
+is unable to list primes between 3825123056546413050 and 18446744073709551615
+since it relies on strong pseudoprime tests after sieving, and nobody has
+proven how many strong pseudoprime tests are required to prove primality for
+integers larger than 3825123056546413050.
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