Six is a semiprime (the product of two primes). Its name, written in English, has 3 letters and 3 is one of the two primes that produce 6.
What 2digit semiprime is like that?
What is the smallest such 3digit semiprime?
What is the smallest such 4digit semiprime?
Consider two cases for each:

Use the word "and" in all numbers such as "onehundred and one".

Don't use the word "and" in those numbers.
In any event, don't use locutions such as "nineteen hundred"; rather, use "one thousand nine hundred" for this example.
2digit semiprime:
33 thirtythree (11 * 3)
3digit semiprime:
253 two hundred and fiftythree (23 * 11)
551 five hundred fiftyone (19 * 29)
4digit semiprime:
1007 one thousand and seven (19 * 53)
1147 one thousand one hundred fortyseven (31 * 37)

Posted by Dej Mar
on 20101207 06:30:47 