103 (number)

103 AD 103 BC 103 prime 27th 103 (one hundred [and] three) is the natural number following 102 and preceding 104. In mathematics 103 is a prime number, and the largest prime factor of .A002583 Largest prime factor of n! + 1 The previous prime is 101. This makes 103 a twin prime.A001097 Twin primes It is the fifth irregular prime,A000928 Irregular primes because it divides the numerator of the Bernoulli number The equation makes 103 part of a "Fermat near miss".A050791 Consider the Diophantine equation x^3 + y^3 = z^3 + 1 (1 < x < y < z) or 'Fermat near misses'. Sequence gives values of z in monotonic increasing order. There are 103 different connected series-parallel partial orders on exactly six unlabeled elements.A007453 Number of unlabeled connected series-parallel posets with n nodes 103 is conjectured to be the smallest number for which repeatedly reversing the digits of its ternary representation, and adding the number to its reversal, does not eventually reach a ternary palindrome.A066450 Conjectured value of the minimal number to which repeated application of the "reverse and add!" algorithm in base n does not terminate in a palindrome References 1 Category:Integers Category: Prime numbers