79
This number is a prime.
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| Kari Phillips ©2003 |
The sum of the first 79 brilliant numbers is divisible by
79 (44003/79=557 which is also a prime). [Gaydos]
79 permutations of the 6 non-prime digits (014689) are
prime numbers, counting 0 as a permissible first digit. [Gaydos]
Country singer Merle Haggard died on his 79th birthday. [Gaydos]
The smallest number n for which the nth prime number (401)
and the nth composite number (108) are both Cyclops
numbers. [Gaydos]
There are 79 strobogrammatic numbers with sums of
reciprocals of digits that are less than one. [Gaydos]
The 79th triangular number (3160) is the first to have all
four triangular digits. [Gaydos]
The 79th triangular number (3160) has a Collatz trajectory
length of 79. [Gaydos]
The 79th Cyclops number is 907. This is this smallest case
in which the two numbers have the same sum of digits and
both are primes. [Gaydos]
79^2 is the smallest square that when multiplied by its
reverse produces a beastly number. [Gaydos]