Algebra prime number..?
813306
Start by dividing by 2 until you can't divide by 2. Then 3, then 5 etc..(prime numbers) until your number has been divided so many times that it equals 1.\n\nThe product is the number you divided into\n\nEg\nExpress 24 as product of primes\n\n24 / 2 =12\n12/2 =6\n6/2 =3\n3/3 =1\n\nThe prime productes are 2, 2, 2, 3\n\nSo you express it as 2^3*3\n\nNow do the same with 252
950667
This is a mathematics question, but fine. \nThe factors are 1, 2, 3, 4, 6, 8, 12, 16, 24.\nThe prime factors are 2^4,3.\n\nJust trial and error.
832736
No other two numbers besides ONE and itself can equal to ONE. for example\n\n7 is prime because only\n\n1*7 can equal to 7\n\n1 is prime because only\n\n1*1 can equal to one
127181
3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97\n25 is NOT a PRIME NUMBER\n25/5=5
654672
Bingo!  I've got it!\n\nConvert from base-3 to base-10:\n3, 5, 8, 11, 16...\n\nSubtract n from each term:\n2, 3, 5, 7, 11...\n\nThis is the sequence of prime numbers!  So the generating sequence would be the nth prime plus n:\n2+1, 3+2, 5+3, 7+4, 11+5, 13+6, 17+7, ...\n\nContinuing the sequence:\n3, 5, 8, 11, 16, 19, 24, 27, 32, 39, 42, 49, 54, 57, 62, 69, 76, 79, 86, 91, 94, 101, 106, 113, 122, 127, 130, 135, 138, 143, 158, 163, 170, 173, 184, 187, 194, 201, 206, 213, 220, 223, 234, 237, 242, 245, 258, 271, 276, 279, 284, 291, 294, 305, 312, 319, 326...\n\nIn base-3:\n10, 12, 22, 102, 121, 201, 220, 1000, 1012, 1210, 2000, 2010, 2022, 2120, 2211, 2221, 10012, ...\n\nAm I right?
136689
2*3*5*7*11*13 = 30030\n\nYou're correct.\n\n(I see questions regarding "1" as a prime - Google "prime numbers" and you'll find many links starting at 2. Just sayin'.....)
780131
1224=2*2*3*3*17\n4000=2*2*2*2*2*5*5*5\n6336=2*2*2*2*2*2*2*11\n3125=5*5*5*5*5\n\nNone. There is no prime # that is a factor of all; therefore, there is no #, prime/composite, that goes into all of them.
1165002
This is a wild guess.\n\n3 x 5 x 7 x 11 x 13 x 17 x 19 x 23 x 29 x 31 x 37 x 41 = the number.\nThe answer will be the product of the first 12 primes that aren't 2. (If 2 were a factor, the answer would be even, not odd.)\n\nFor the rest, use a calculator. And check to make sure all those numbers are prime. Sorry this is such a whack answer.
1133242
a number which can be divided evenly only by itself and 1...\n\n"...in mathematics, a prime number (or a prime) is a natural number greater than one whose only positive divisors are one and itself. Said another way, a prime number can only be divided into equally by 1 and itself (3 is a prime number because 1 goes into it equally 3 times and 3 goes into it equally once, there is no remainder.) A natural number that is greater than one and is not a prime is called a composite number. The numbers zero and one are neither prime nor composite. The property of being a prime is called primality. Since 2 is the only even prime number, the term odd prime refers to all prime numbers greater than 2. Prime numbers are of course of prime importance in number theory.\n\nThe sequence of prime numbers begins as follows:\n\n2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, ... \n\n2 is the only even prime number "
240962
i think this will work...\n\nint prime=43;\nint isprime=0;\nfor(int i=2 ;i<prime;i++)\n{\n   if((prime%i)==0))\n   {\n       isprime=1;\n       break;\n   }\n}\nif(isprime==1)\n   printf("Not prime");\nelse\n   printf("Prime !");\n\n\n=====\nGot it na??
387930
it is 2\ncoz it's the only even prime number
830770
2 is the only even prime number, and it divides evenly into every even number. 2 is the smallest factorial prime and the only factorial that is prime.  The first 30 prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, and 113 .\n\nPrime numbers are numbers greater than 1 that are divisible by exactly two numbers: 1 and themselves. For example, the prime numbers through 20 are 2, 3, 5, 7, 11, 13, 17 and 19. As numbers grow larger, prime numbers become scarcer. If you examine the numbers from 1 to 100, you'll find that 25% of them are prime numbers. When you extend the list and check the numbers from 1 to 1000, the percentage drops dramatically to 16.8%. Only about 7% of the numbers from 1 to 1,000,000 are prime numbers.\n\nMathematicians believe (but have not conclusively proven) that every even number is the sum of two prime numbers except for the number 2.♥
1117937
Prime Factors\nIn number theory, the prime factors of a positive integer are the prime numbers that divide into that integer exactly, without leaving a remainder. I have made a table listing the prime factors for numbers up to 10.(It could be expanded to 2000).  To find the prime factors for larger numbers try the Prime Factor Calculator. \nn Prime\nFactors \n1 1 \n2 Prime Number \n3 Prime Number \n4 2x2 \n5 Prime Number \n6 2x3 \n7 Prime Number \n       8 = 2x2x2  (This the the Prime number of 8)\n9 3x3 \n10 2x5 \n\n\nHope that helped
1090956
25, if you're talking about whole, positive numbers.\n\nThey are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89 and 97.\n\nMany people debate whether or not 0 and 1 should also be considered prime.  0 is just weird and 1 is part of the definition of prime, so I don't think they really are prime, personally.
630729
2.Only even number to be prime
467453
This can be proven by exhausing all the possibilities.  A prime number is defined as a number whose only factors are 1 and itself.  For the number 3, we need only check 1 number (the number 2), as 1 and 3 are already factors.  Dividing 2 into 3, we quickly find that the answer is 1.5, which shows that 2 is not a factor.  Therefore, the only factors of 3 are 1 and 3, which, according to the definition of a prime number, means that 3 is prime.
161312
"Mathematicians have tried in vain to this day to discover some order in the sequence of prime numbers, and we have reason to believe that it is a mystery into which the human mind will never penetrate." — Leonhard Euler\n\nWe don't know if there is a pattern, but if it is, it's pretty complicated. The formula x^2 + x + 41 gives primes up to 40, but that's as far as it'll go.\n\nThere is a possible pattern with the distribution of primes, but this has not been proven, and if you manage to prove the Reimann hypothesis, you'll be plenty rich!