457
This number is a prime.
The German submarine known as U-457 was sunk in the Barents Sea by depth charges from the British destroyer HMS Impulsive during WWII. [Wynn]
The first Honaker
prime (p88 = 457: 8+8 =
4+5+7) that is itself the subscript of another Honaker prime (p457 = 3229: 4+5+7 =
3+2+2+9). [Beedassy]
The Amazon Standard Identification Number (ASIN) for Nate
Kenyon's science fiction novel "Prime" is B00457XFFQ. [Sardina]
If the symbols of Z340 are translated to a numeric form, where each unique symbol is assigned a unique number, then the sum of only one row (the 18th) is prime, i.e., 19 + 19 + 33 + 26 + 56 + 40 + 26 + 36 + 9 + 23 + 42 + 1 + 14 + 54 + 21 + 33 + 5 = 457. [Honaker]
A four year cycle (three non-leap and one leap) has 457 prime days. [Post]
Is 457 the only Honaker prime for which its prime index
(88) plus 666 is an anagram of the prime? [Gaydos]
A 457(b) plan is an employer-sponsored, tax-favored retirement savings account. With this type of plan, you contribute pre-tax dollars from your paycheck, and that money won't be taxed until you withdraw the money, usually for retirement. [Warren]
The smallest prime number for which the reverse of its
double is a smaller prime. [Gaydos]
The 457th Fibonacci number is a 96-digit number containing the digit 2 just once. Is this the largest Fibonacci number that has one or more unique digits? [Gaydos]
The concatenation of the three values of n for which (n!+1)
is a perfect square. [Kilpatrick]
There are 457 squares that are each the sum of two
consecutive distinct-digit positive integers. [Gaydos]
The first Honaker
prime with a repdigit prime index (88). [Gaydos]
The smallest Honaker prime that is the hypotenuse of a
Pythagorean triangle: {457, 425, 168}. [Bajpai]
Only 457 of the iconic BMW Model 2002 KK-and-K turbo-charged cars were ever manufactured. [Harrison]
Ham the Astrochimp was sold to the United States Air Force
for $457. [Nicholls]