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In 1952 an early computer was used to discover the 13th Mersenne one of these numbers |
a prime number
DD
|
$3,000 |
DJ |
TEEN MATH |
2018-11-07 |
#7858 |
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Multiply 2 of these integers, like 3 & 7, & you get a "semi" one, like 21 |
a prime number
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$800 |
DJ |
YOU KNEW THERE'D BE MATH |
2018-04-18 |
#7743 |
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Euclid provided a proof that the number of these is infinite; in 1992 one with 227,832 digits was found |
a prime number
|
$500 |
J |
MATH |
1994-10-13 |
#2324 |
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A number that can be divided only by itself & 1, such as 7 |
a prime number
|
$400 |
J |
MATHEMATICS |
1986-01-30 |
#364 |