$t_title is "26"
$t_adjust_path is "/~caldwell/curios/"
$t_class is "composite"
$short is "26"
$nunber_id is "402"
$t_meta['description'] is "One of many pages of prime number
curiosities and trivia. This page discusses 26
Come explore a new prime today!"
The number obtained by concatenating the first prime and twice the next prime. [Russo]
The prime factorization of 26 uses the first three counting numbers. [Trotter]
One of only two numbers which contain exactly the first three digits in its unique prime factorization. [Hunter]
The number of minimal primes which cover the set of primes in base 10. [Rupinski]
26 is the smallest number that can be expressed by three identical prime digits in a prime base, i.e., 222 in base three. Note that it is also the reverse of the second such number: 62 = 222 in base 5. [Necula]
26 = 2 * prime(6). [Gupta]
There are no twin primes between 262 and
The only number n < 1000 such that 10^n plus or minus 123456789 are both primes. [Loungrides]
The largest of three successive numbers n, n-1, n-2 such that the product of each of them with its reversal plus 1 is prime, i.e., 26*62+1=1613, 25*52+1=1301, 24*42+1=1009. [Loungrides]
The number of primes that end in 3 among the first 100
primes. A greater number than endings 1, 7, or 9. [Honaker]
(There are 7 curios for this number that have not yet been approved by an editor.)
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