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A164905
Primes from composite numbers by prefixing with 1.
0
19, 127, 139, 149, 151, 157, 163, 181, 191, 193, 199, 1117, 1123, 1129, 1153, 1171, 1187, 1201, 1213, 1217, 1231, 1237, 1249, 1259, 1279, 1289, 1291, 1297, 1301, 1303, 1319, 1321, 1327, 1361, 1381, 1399, 1423, 1427, 1429, 1447, 1451, 1453, 1459, 1471
OFFSET
1,1
COMMENTS
The composite numbers are considered in increasing order.
EXAMPLE
1493 is a prime from the composite number 493 by prefixing it with 1.
CROSSREFS
Sequence in context: A241965 A182193 A109669 * A142106 A078851 A202125
KEYWORD
base,nonn
AUTHOR
Parthasarathy Nambi, Aug 30 2009
STATUS
approved