Numbers 130-139

A page of the Numeropedia - the Special Encyclopedia of Numbers

1  - 10 - 100  - 1000 - 10,000 - 100,000 - 1M - 10M - 100M1B10B - 100B - 1T - 10T - 100T - 1Q - ...

130

[EECS]  130(W, KW or MW) is one of standard numerical values for resistors (of tolerance class 5%).  130pF (picofarads) is one of standard numerical values for capacitors.

[Math.]  Six square numbers using the same digits: 1302 = 16900, 1402 = 19600, 3102 = 96100, 1032 = 10609, 2472 = 61009 and 3012 = 90601.

[Tech.]  Automobile Tire’s Speed Rating

 Tire Rating L M N P Q R S Max. Speed (mph) Max. Speed (kph) 75 120 81 130 87 140 93 150 100 160 106 170 112 180 Tire Rating T U H V W Y Max. Speed (mph) Max. Speed (kph) 118 190 124 200 130 210 149 240 168 270 186 300

130 & 131

[Science]  The wind velocity ranges in each of 5 categories in the Saffir-Simpson Hurricane Intensity Scale:

 Scale (Category) Wind Velocity (miles/hour) Category 1 74-95 mph Category 2 96-110 mph Category 3 111-130 mph Category 4 131-155 mph Category 5 > 156mph.

131

[Math.]  An absolute prime number (or permutable prime number): all 3 numbers 131, 311 and 113 are prime or in fact, absolute prime. A palindromic prime number. The smallest palindromic prime of odd numbers of digits.

[Math.]  Circular prime numbers: all 3 numbers 131, 311 and 113 are prime.

[Phone]  The emergency telephone numbers dialing within Ecuador are 101 and 131.

132

[Math.]  1323 = 2,299,968 = (22999+68)3.

[Math.]  A Catalan number: C6 = 132.

[Math.]  132 = 13+12+31+32+21+23, a number which is equal to the sum of all 6 2-digit numbers formed by its digits.

[Trivia]  The U.S. President's White House has 132 rooms, 35 bathrooms, 28 fireplaces, 8 staircases and 3 elevators..

[World]  The ISO country code for Cape Verde. (ISO-3166)

133

[Math.]  13+33+33 = 55, 53+53 = 250 and 23+53+03 = 133.

[Math.]  1445 = 1335+1105+845+275. (Lander & Parkin, 1966). The first counter-example to disprove Euler’s conjecture that it always requires at least n terms (of nth power) to sum to an nth power, nontrivially. (Fermat’s Last Theorem is a special case for only 2 terms).

[Math.]  Four square numbers using the same digits: 1332 = 17689, 1372 = 18769, 2812 = 78961 and 2862 = 81796.

[Tech.]  The standard 1-second duration is 9,192,631,770 periods of Cesium-133 atom oscillation. The resonance frequency of Cesium-133 atom is 9,192,631,770 Hz (Hertz), corresponding to the transition between two hyperfine levels of its ground state. Adopted by the International Systems (SI) of units in 1967.

[Measure]  1 mmHg (torr) = 133.322N/m2 (pascals) = 13.595 Kg/m2.

The standard atmospheric pressure at sea level is 1 atm (atmosphere) = 1,013.25 millibars = 29.921 inches of mercury (inHg).

Units for pressure measures:

1 atm (atmosphere) = 1013.25 millibars = 101,325 N/m2 (pascals) = 1033.227 g/cm2 = 10,332.27 kg/m2 = 760 mmHg (torrs) = 29.921 inHg = 14.696 lb/inch2 (psi&

1 bar = 105 N/m2 (pascals) = 106 dynes/cm2 (cgs bars).

134

[Math.]  1342 = 17,956 = (–01+79+56)2

1343 = 2,406,104 = (24+06+104)3.

[Math.]  13,467 = 1342–672 = (134+67)×67, where 134 = 67×2.

[Tech.]  One of standardized baud rate (bits per second) in electronic data transmissions.

135

[Gov.]  The number of candidates on the ballot of the special election for the California governor on 07 October 2003, to recall the then-governor Gray Davis, who was re-elected in 2002.

[Math.]   Each internal angle of a regular 8-sided polygon (octagon) is 135o.

[Math.]  135 = 11+32+53.

[Math.]  sin(270o) = cos(180o) = tan(135o) = –1.

[Math.]  135 = (1+3+5)×(1×3×5). The only other non-trivial such number is 144 (by D. Wilson). Also called Filzian numbers.

[Math.]  Three square numbers using the same digits: 1352 = 18225, 1592 = 25281 and 2852 = 81225.

[Sport]  The weight range for the Lightweight boxing class is 130-135 lbs. The weight range for the Super Lightweight (or Junior Welterweight) boxing class is 135-140 lbs.

136

[Math.]  136 = 21+32+53.

[Math.]  13+33+63 = 244 and then 23+43+43 = 136.

[Math.]  A triangular number (sum of all integers from 1 to 16):

136 = 1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16.

[World]  The ISO country code for Cayman Islands. (ISO-3166)

137

[Math.]  A prime number truncated from the largest known left-truncatable prime number 357,686,312,646,216,567,629,137.

[Math.]  Four square numbers using the same digits: 1332 = 17689, 1372 = 18769, 2812 = 78961 and 2862 = 81796.

[Theology]  The number of verses in the Holy Bible: 23145 verses in Old Testament and 7958 in New Testament (plus 137 un-numbered verses in Psalms).

138

[Math.]  12×483 = 5,796 = 42×138.

[Math.]  The denominator of the 22nd Bernoulli number: B22 = 854513/138.

139

[Math.]  A prime number.

130-139

[Library]  Numbers 100-199 are the first 3 digits in Dewey Decimal Classification System call numbers for library books in Philosophy, Psychology and Ethics… Numbers 130-139 are for books in Paranormal Phenomena, Mysteries, Physiognomy and Phrenology.

100-199

[Education] The numbers commonly assigned for upper level undergraduate (last 2 years, junior and senior) courses in most U.S. universities and colleges.