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# What is a two digit prime number whose digits add up to 5?

# What is the lowest 5 digit prime number?

four The lowest 5 digits prime number is 10007

# What is a two digit multiple of 5 whose digits add up to 13?

The number is 85.

# A three digit number whose digits add up to 9?

900, 810, 801, 720, 711, 702, 630, 621, 612, 603, 540, 531, 522, 513, 504, 450, 441, 432, 423, 414, 405, 360, 351, 342, 333, 324, 315, 306, 270, 261, 252, 243, 234, 225, 216, …207, 180, 171, 162, 153, 144, 135, 126, 117 and 108. NOTE : These numbers have digits whose sum is 9. An interesting mathematical fact is that they are also all divisible by 9. This applies to any number. If the sum of the digits = 9 or a multiple of 9 then the number is divisible by 9.

# A two digit number not prime not a multiple of 2 3 5 what number are you?

One two digit number that is not prime and is not a multiple of 2, 3, or 5 is 49. Another such number is 91.

# What is the largest two-digit prime number?

97 97 is the largest two digit prime number.

Answered

# What is largest two digit prime numbers whose digits are also prime?

73 satisfies your condition.

Answered

# What is the largest 5-digit prime number?

The largest 5-digit prime number is 99,991

Answered

# Largest three digit prime number whose digits are all primes?

How about: 773