157 (number)

157 (one hundred [and] fifty-seven) is the number following 156 and preceding 158.

In mathematics

157 is a prime number. The next prime is 163 and the previous prime is 151, with which 157 form a sexy prime triplet. Taking the arithmetic mean of those primes yields 157, thus it is a balanced prime.

In base 10, 157² is 24649, and 158² is 24964, which uses the same digits. 157 is the largest known number with a square that relates in this way to the square of the next integer.

157 is a repunit in base 12 (111), so it is a unique prime in the same base.

The simplest right angle triangle with rational sides that has area 157 has the longest side with a denominator of 45 digits.

157 is also an emirp, a Chen prime, and the least irregular prime with index 2.

157 is the largest known prime p which is also prime. (see  A056826)

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 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 Remlick (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

• "157 Riverside Avenue" is a song by REO Speedwagon from their debut album, REO Speedwagon in 1971. Its title refers to a Westport, Connecticut address where the band stayed while recording it.
• Piano Sonata No. 1 in E major, D. 157 is a piano sonata in three movements by Franz Schubert.

In sports

• Ken Carpenter held the US record in discus, and won the NCAA national title with a toss of 157 feet in 1936

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

In other fields

157 is also:

• The year AD 157 or 157 BC
• 157 AH is a year in the Islamic calendar that corresponds to 773–774 CE
• The atomic number of an element temporarily called Unpentseptium
• 157 Dejanira is a main belt asteroid
• O157, Escherichia coli O157:H7
• Financial Accounting Standards Board Statement No. 157 defines fair value^[1]
• South Qu'appelle No. 157, Saskatchewan is a rural municipality in Saskatchewan, Canada
• United States Department of State Form DS-157 is Supplemental Nonimmigrant Visa Application^[2]
• One57, a partially completed skyscraper at 157 West 57th Street in New York City, on which the crane partially collapsed during Hurricane Sandy

See also

• List of highways numbered 157
• United Nations Security Council Resolution 157
• United States Supreme Court cases, Volume 157
• Pennsylvania House of Representatives, District 157
• Township 157-30, Lake of the Woods County, Minnesota

References

External links

Wikimedia Commons has media related to 157 (number).

• The Number 157
• Prime Curios: 157