23
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The smallest two-digit Prime number whose digits themselves are prime is 23. Both 2 and 3 are prime numbers, and together they form the prime number 23.
smallest 8 digit number with three different digits
All five digit numbers have three digits. The smallest five digit whole number is 10,000
The smallest odd 7-digit number is 1,000,001 .If you also want the ones digit to be the sum of the thousands and ten-thousands digits,then the smallest odd 7-digit number that satisfies that additional requirement is 1,001,001,but it's no longer the smallest odd 7-digit number.
It is 17.
10,234