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Search: a213306 -id:a213306
Displaying 1-2 of 2 results found.
page 1
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A213303
Smallest number with n nonprime substrings (Version 2: substrings with leading zeros are counted as nonprime if the corresponding number is > 0).
+10
3
2, 1, 10, 14, 101, 104, 144, 1001, 1014, 1044, 1444, 10010, 10014, 10144, 10444, 14444, 100101, 100104, 100144, 101444, 104444, 144444, 1000144, 1001014, 1001044, 1001444, 1014444, 1044444, 1444444, 10001044, 10001444, 10010144, 10010444, 10014444, 10144444, 10444444, 14444444, 100010144
(list; graph; refs; listen; history; text; internal format)
FORMULA
a(n) <= A213306(n).
A213307
Minimal prime with n nonprime substrings (Version 3: substrings with leading zeros are counted as nonprime if the corresponding number is not a prime).
+10
3
2, 13, 11, 127, 101, 149, 1009, 1063, 1049, 1481, 10091, 10069, 10169, 11681, 14669, 100129, 100189, 100169, 101681, 104681, 146669, 1000669, 1001219, 1001081, 1004669, 1014469, 1046849, 1468469, 10001081, 10004669, 10010851
(list; graph; refs; listen; history; text; internal format)
FORMULA
a(n) >= A213306(n).
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Last modified December 4 15:46 EST 2024. Contains 378416 sequences.
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