157 (number)

Source: Wikipedia, the free encyclopedia.
← 156 157 158 →
Cardinalone hundred fifty-seven
Ordinal157th
(one hundred fifty-seventh)
Factorizationprime
Prime37th
Divisors1, 157
Greek numeralΡΝΖ´
Roman numeralCLVII
Binary100111012
Ternary122113
Senary4216
Octal2358
Duodecimal11112
Hexadecimal9D16

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 OEISA056826).
  • the least
    irregular prime
    with index 2.
  • a palindromic number in bases 7 (3137) and 12 (11112).
  • a
    unique prime
    in the same base.
  • a prime whose digits sum to a prime. (see OEISA046704).
  • 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

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

  • USCGC Cuyahoga (WIX-157)
    was a United States Coast Guard cutter built in 1926
  • USNS Paoli (T-AO-157)
    was a United States Navy Type T2 tanker during World War II
  • USS Alcona (AK-157)
    was a United States Navy Alamosa-class cargo ship during World War II
  • USS Caravan (AM-157)
    was a United States Navy Admirable-class minesweeper during World War II
  • USS Dickerson (DD-157)
    was a United States Navy Wickes-class destroyer during World War II
  • USS Fechteler (DE-157) was a United States Navy Buckley-class destroyer escort during World War II
  • USS General C. C. Ballou (AP-157)
    was a United States Navy General G. O. Squier-class transport ship during World War II
  • USS King County (AG-157)
    was a United States Navy LST-542-class tank landing ship during World War II
  • USS Napa (APA-157) was a United States Navy ship during World War II
  • USS Orvetta (IX-157) was a United States Navy transport military ship during World War II
  • USS Remlik (SP-157)
    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

  • The British Rail Class 157 was the designation for a range of Diesel multiple unit trains of the Sprinter family
  • London Buses route 157
  • American Airlines Flight 157 from New York City bound for Mexico City crashed on November 29, 1949
  • 157th Street (IRT Broadway – Seventh Avenue Line)
    , a New York City Subway station at Broadway in Manhattan served by the 1 train
  • 157th Street (Manhattan)
    , a street in New York City

In other fields

157 is also:

See also

References

  1. ^ "FLW Incorporated | Specialists in Physical Measurement, Testing, Calibration & Control".
  2. ^ "Summary of Statement No. 157". Archived from the original on 2010-05-23. Retrieved 2008-12-19.
  3. ^ "Visa Application Forms". Archived from the original on 2010-05-23. Retrieved 2017-06-24.

External links