Posted by Diana on Monday, March 14, 2011 at 8:02am.
Find all the two digit prime numbers neither of whose digits are prime.

Math  bobpursley, Monday, March 14, 2011 at 8:12am
well, prime digits are 1,2,3,5,7
The first number then is 44, then 46, 49, then 64, you finish.

Math  Diana, Monday, March 14, 2011 at 8:18am
okay, thank you

Math  Diana, Monday, March 14, 2011 at 8:19am
is 48 included in the numbers you listed?

Math  Writeacher, Monday, March 14, 2011 at 9:28am
48 is not a prime number.
http://www.jiskha.com/display.cgi?id=1300106041
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