The nth Prime Page will now find any of the first 2.623˙1015 primes or π(x) for x up to 1017.
Ever since Donald Duck's car first appeared in 1938 (a "1934 Belchfire Runabout" that he built from spare parts), it has frequently sported the license plate number 313. [Haga]
The telephone area code serving the city of Detroit, Michigan. It was popularized in the hip hop drama film 8 Mile starring Eminem. [Anon]
Islam's first battle (The Battle of Badr) against the pagans of Mecca was fought and won by 313 Muslims. In Shi'ism, it is believed that Imam al-Mahdi (the ultimate savior of the believers) will appear when there are 313 true and sincere Shia followers in the world. [Daniyal]
Frenicle challenged Wallis to solve x2 - 313y2 = 1. [Beiler]
313 = 122 + 132. [De Geest]
Wood's History of Alameda County, California, published in the decade around the first U.S. centennial, includes 313 men and not one woman! [Haga]
10313 + 313 is prime. [Broadhurst]
The Mayan ruins of Cobá near Tulúm in the Yucatán peninsula contains a pyramid that has a total of 313 glyphs on its four sides. [Haid]
In the movie Somewhere In Time, playwright Richard Collier (Christopher Reeve) checks into room number 313 of the Grand Hotel (Mackinac Island, Michigan). [Haga]
(2^3+1)/3, (2^31+1)/3, (2^13+1)/3, and (2^313+1)/3 are prime. [Aggarwal]
The smallest happy number which is a multidigit palindromic prime. [Gupta]
1/313 produces a string of decimals that repeats itself after 312 (one less than itself) decimals. Only 5 of the 3-digit palindromic primes have this ability. [Vatshelle]
The paper Light and Number: Ordering Principles in the World of an Autistic Child by Park and Youderian begins on page 313 in the Journal of Autism and Childhood Schizophrenia (1974). Note that the Park's child Elly was fascinated by the "order" of numbers, especially primes.
The Roman emperor Constantine made Christianity the official religion in A.D. 313. [Pitts]
There are 313 exclamation marks in the KJV Bible! The first one occurs at the end of Genesis 17:18. [Bennet]
313 "inverted" is also a prime, 131. [Blackham]
Eris, the largest known dwarf planet in the solar system, was previously designated UB313 in 2003.
313 -> 3 * 13 = 3 + 5 + 7 + 11 + 13. [Vrba]
This palindromic prime yields another and two more primes, if its digits are replaced by their squares, cubes and fourth powers. [Silva]
A fingerprint of Divinity is seen in this number in that it is a compound of two mirror-image emirps, 31, the Hebrew alpha-numberic value of the name GOD [EL = 1+30], and 13, the prime in the Hebrew name of Jehovah [YHVH = 10+5+6+5 = 26 = 2*13], hence, 31/13 compounded = 313. [Pitts]
(313) = prime(3)*13. [Wesolowski]
313 divides 102345679. [Wesolowski]
The seventh prime whose sum of digits is 7. [Wesolowski]
The smallest palindromic prime formed from the first digits of the decimal expansion of in forward and reverse order. [Silva]
Subject of the psychedelic artwork featured in the 2010 October Edition of Pour la Science.
(There are 20 curios for this number that have not yet been approved by an editor.)
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