find whether 5cross times7cross times11cross times13plus11 is a prime number or a composite number ?
 

Asked by vaishnaviharne | 25th Oct, 2014, 06:58: AM

Expert Answer:

5 cross times 7 cross times 11 cross times 13 plus 11 equals 11 cross times left parenthesis 5 cross times 7 cross times 13 plus 1 right parenthesis space left square bracket t a k i n g space 11 space c o m m o n right square bracket equals 11 cross times 456 S i n c e space i t space c a n space b e space w r i t t e n space a s space f a c t o r s space o t h e r space t h a n space i t s e l f comma space t h e r e f o r e space t h e space n u m b e r space i s space a space c o m p o s i t e space n u m b e r.

Answered by Prasenjit Paul | 26th Oct, 2014, 12:41: AM