What is the largest known twin prime?

There's no "largest" twin prime because it's conjectured there are infinitely many, but the current record-holder (as of late 2024/early 2025) found by the PrimeGrid project is the pair 2996863034895 × 2 1290000 ± 1 2 9 9 6 8 6 3 0 3 4 8 9 5 × 2 1 2 9 0 0 0 0 ± 1 , each having 388,342 digits. This massive number, discovered in 2016, is a testament to ongoing efforts by distributed computing projects to find ever-larger twin primes, as mathematicians suspect these pairs never end.

What is the largest twin prime pair known?

The largest known twin prime pair, as of late 2024/early 2025, is a massive number with 388,342 digits, expressed as 2996863034895 × 2¹²⁹⁰⁰⁰⁰ ± 1, discovered by Tom Greer in 2016 as part of the PrimeGrid project. While new, smaller, but still huge twin primes are found regularly by distributed computing efforts like PrimeGrid and Twin Prime Search, this 388k-digit pair remains the record holder for size, showcasing the ongoing search for these elusive primes. 

Is 1000000000000066600000000000001 a prime number?

Due to the superstitious significance of the numbers it contains, the palindromic prime 1000000000000066600000000000001 is known as Belphegor's Prime, named after Belphegor, one of the seven princes of Hell.

Is 12345678910987654321 a prime number?

The number 12,345,678,910,987,654,321 is indeed prime. It consists of 20 digits and is really easy to remember: count to 10 and then count backward again until you get to 1. But it has been unclear whether other primes take the palindromic form of starting at 1, ascending to the number n and then descending again.

What is the 1000000000000th prime number?

For example, entering either 1,000,000,000,000 or 1.0e12 will tell you ' The 1,000,000,000,000th prime is 29,996,224,275,833.

The 15-Year-Old Who Discovered the Law of Primes

Is 170141183460469231731687303715884105727 prime number?

Using this algorithm with hand computations on paper, Lucas showed in 1876 that the 39-digit number (2127 – 1) equals 170,141,183,460,469,231,731,687,303,715,884,105,727, and that value is prime. Also known as M127, this number remains the largest prime verified by hand computations.

Is 2099 prime?

Yes, 2099 is a prime number, meaning it's only divisible by 1 and itself, with no other whole number factors, making it a unique number often noted in number theory curiosities. 

Why is 37 so special?

The number 37 is special due to its unique mathematical properties as a prime, being an emirp (reverses to another prime, 73), a safe prime (2*17+1), and appearing in sequences like Cuban primes, while also fitting into human decision-making patterns, often appearing when people try to pick a "random" number. It symbolizes wisdom in some spiritual contexts and is linked to Christ in early Christian traditions, making it significant in both secular and mystical ways.
 

What is the coolest prime number?

There's no single "coolest" prime, but 73 is a top contender because it's the 21st prime, its mirror (37) is the 12th prime, and 7x3=21, plus it's a binary palindrome (1001001). Other popular primes include Belphegor's Prime (1000000000000066600000000000001) for its spooky digits, large truncatable primes like 357686312646216567629137, and the memorable 12345678910987654321. 

What is 1 ➗ 0 and why?

1 divided by 0 (1/0) is undefined in standard mathematics because it breaks the rules of arithmetic; it doesn't equal a number like infinity (though limits approach infinity) and leads to contradictions, as you can't group things into zero-sized groups to make one. Division is repeated subtraction or grouping, and asking "how many zeros make one" has no answer, as adding zero always gives zero, never one.
 

What is the cursed prime number?

Belphegor's prime is the palindromic prime number 1000000000000066600000000000001 (1030 + 666 × 1014 + 1), a number which reads the same both backwards and forwards and is only divisible by itself and one.

Is Belphegor a fallen angel?

Yes, in Christian demonology and various lore, Belphegor is a fallen angel who became a demon lord, associated with the sin of sloth, and is one of the Seven Princes of Hell, known for tempting people with discoveries and riches through laziness. He was originally an angel (sometimes a Principality) who fell and now represents a demonic force opposing beauty and encouraging idleness, according to the Gods Reborn Wiki and the Ushinawareta Kibō Wiki. 

Are 2027 and 2029 twin primes?

Among them are 2027 and 2029. One can (or has to be prompted to) note that the two prime numbers are special because they differ by 2. Such primes are called twin primes. Figure 9 displays the following pairs of twin primes: (2027, 2029), (2081, 2083), (2087, 2089), (2111, 2113), (2129, 2131), (2141, 2143).

Who proved Goldbach?

In 2013, Harald Helfgott made the greatest breakthrough to date on Goldbach's conjecture. He proved its weak version: any odd number greater than 5 can be expressed as the sum of three primes. The first steps towards solving the conjecture were taken by G. H.

What is a superprime?

Super-prime numbers, also known as higher-order primes or prime-indexed primes (PIPs), are the subsequence of prime numbers that occupy prime-numbered positions within the sequence of all prime numbers.

What is the most picked number between 1 and 100?

While true randomness means every number is equally likely, surveys show people often pick 37, 73, and 7, with some studies also finding 69, because humans aren't good at randomness and favor primes, patterns, or psychologically "random-feeling" numbers, not true statistical distribution.
 

Is 37 God's number?

According to the Early Church Fathers, thirty-seven is a symbol of Christ. According to Gematria, the numerical value for the words “I am” is thirty-seven, as is ALEA, which means “Word of God”.

Is 69 a special number?

69 is a lucky number because it is a natural number that remains after repeatedly removing every nth number in a sequence of natural numbers, starting from 1. In decimal, 69 is the only natural number whose square (4761) and cube (328509) use every digit from 0–9 exactly once.

How many zeros are in a googolplexianth?

There's no standard "googolplexianth" number; the "-ian" suffix usually denotes a power of a googolplex (like a googolplexian = 10^googolplex), so a "googolplexianth" would be a tiny fraction, but if you mean a googolplexian, it's a 1 followed by a googolplex (10^100) zeroes, a truly immense, unwriteable number represented as 10(10100)10 raised to the exponent open paren 10 to the 100th power close paren end-exponent10(10100).
 

What is a vigintillion?

A vigintillion is a huge number, representing 1 followed by 63 zeros (10^63) in the modern short scale used in the U.S. and most English-speaking countries, but traditionally 1 followed by 120 zeros (10^120) in the long scale (older British usage), derived from Latin for "twenty". It's a very large number, but smaller than a googol.
 

Is 731 a prime no?

No, 731 is not a prime number because it's a composite number, meaning it has factors other than 1 and itself, specifically 17 and 43, as 17×43=73117 cross 43 equals 73117×43=731. 

Is 1999 even or odd?

About the Number 1999

1999 is the natural number that is succeeded by 1998 and preceded by 2000. 1999 in words – One Thousand Nine Hundred and Ninety Nine. Is 1999 an odd number? – Yes.

Is 1549 prime no?

This number is a prime. The smallest multidigit number that is not the sum of a prime and a power.