2 and 5. You will need to multiply 2 four times and 5 twice.
2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,101,103,107,109,113, 127,137,139,149,151,157,163,167,173,179,181,191,193,197,199.
The numbers 353, 359, 367, 373, 379, 383, 389 and 397 are prime.
Any number greater than 1 can be co-prime.
1,2,3,5,7,11,13,17,19,23,29,31,37,41,43 47,53,59,61,67,71,73,79,83,89,97,101,103,107,109 113,127,131,137,139,149,151,157,163,167,173,179,181,191,193 197,199,211,223,227,229,233,239,241,251,257,263,269,271,277 281,283,293,307,311,313,317,331,337,347,349,353,359,367,373 379,383,389,397.
The 17 prime numbers between 400 and 500 are 401, 409, 419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487, 491, and 499.
You will need to multiply six prime numbers to obtain 400: 400 = 5*5*2*2*2*2
400
Yes.
20 and 20
There is only one number that equals 400. The number is 400, and it's not a prime number.
I'm sure there are more than 2 prime numbers that are 400 digits long.
Mutliplied two prime numbers to get 400?
400 multiplied by 500 is 200,000.
500 multiplied by 400 is 200,000.
No.
Any two prime numbers, of about 200 digits each, would work.Any two prime numbers, of about 200 digits each, would work.Any two prime numbers, of about 200 digits each, would work.Any two prime numbers, of about 200 digits each, would work.
2 and 5 400 = 2 x 2 x 2 x 2 x 5 x 5