157 (number) explained
Number: | 157 |
Factorization: | prime |
Prime: | 37th |
Divisor: | 1, 157 |
157 (one hundred [and] fifty-seven) is the number following 156 and preceding 158.
In mathematics
157 is:
- the 37th prime number. The next prime is 163 and the previous prime is 151.
- a balanced prime, because the arithmetic mean of those primes yields 157.
- an emirp.
- a Chen prime.
- the largest known prime p which
is also prime. (see).
- the least irregular prime with index 2.
- a palindromic number in bases 7 (3137) and 12 (11112).
- a repunit in base 12, so it is a unique prime in the same base.
- a prime whose digits sum to a prime. (see).
- a prime index prime.
In base 10, 1572 is 24649, and 1582 is 24964, which uses the same digits. Numbers having this property are listed in . The previous entry is 13, and the next entry after 157 is 913.
The simplest right angle triangle with rational sides that has area 157 has the longest side with a denominator of 45 digits.
In the military
- was a United States Coast Guard cutter built in 1926
- was a United States Navy Type T2 tanker during World War II
- was a United States Navy Alamosa-class cargo ship during World War II
- was a United States Navy Admirable-class minesweeper during World War II
- was a United States Navy Wickes-class destroyer during World War II
- was a United States Navy Buckley-class destroyer escort during World War II
- was a United States Navy General G. O. Squier-class transport ship during World War II
- was a United States Navy LST-542-class tank landing ship during World War II
- was a United States Navy ship during World War II
- was a United States Navy transport military ship during World War II
- was a United States Navy yacht during World War I
- ZIL-157 is a 2.5-ton truck produced in post-World War II Russia
In music
In sports
In transportation
In other fields
157 is also:
See also
External links
Notes and References
- Web site: FLW Incorporated | Specialists in Physical Measurement, Testing, Calibration & Control.
- Web site: Summary of Statement No. 157. 2008-12-19. 2010-05-23. https://web.archive.org/web/20100523143058/http://www.fasb.org/st/summary/stsum157.shtml. dead.
- Web site: Visa Application Forms . 2017-06-24 . https://web.archive.org/web/20100523103312/http://travel.state.gov/visa/frvi/forms/forms_1342.html . 2010-05-23 . dead .