"emirp" is "prime" spelled backwards. An emirp number is a prime number whose reverse is also a prime. However, palindromic primes are excluded.
So 13 / 31 are emirp numbers.
An emirp number is a prime number which, when you reverse the digits, produces a different prime number. Therefore, there are no single-digit emirp numbers. The first three emirp numbers are: 13, 17, 31
No, it is not.
yes 11 reverse 11 still
Yes. It is a prime number It is also an emirp (i.e.1301 is prime). And if you want to amaze friends by offering to write out from memory a prime with over a thousand digits, simply write the digit ' 1 ' 1031 times; this is the largest repunit (repeated digit) proven prime.[[User:Colcestrian|Colcestrian]] 02:43, 23 Jun 2009 (UTC)
(positive number) x (positive number) = positive number (positive number)/(positive number) = positive number (positive number) x ( negative number) = negative number (positive number)/( negative number) = negative number (negative number) x (negative number) = positive number (negative number)/(negative number) = positive number
atomic number = number of proton in an element number of proton = number of electron mass number = number of proton + number of neutron therefore... atomic number = mass number - number of neutrons
A positive number. Positive Number x Positive Number = Positive Number Positive Number x Negative Number = Negative Number Negative Number x Negative Number = Positive Number
A real number which is not a rational number is an irrational number.
Atomic mass is the number of protons in an atom mass number is the number of protons plus neutrons in an atom the number of neutrons would equal the mass number minus the atomic number.
There is no number that is equivalent since a number is just that - a number. It is NOT a measure of time.There is no number that is equivalent since a number is just that - a number. It is NOT a measure of time.There is no number that is equivalent since a number is just that - a number. It is NOT a measure of time.There is no number that is equivalent since a number is just that - a number. It is NOT a measure of time.
A multiple of a number is the product of that number and any whole number.
A multiple of a number is the product of that number and any whole number.