Q: What minus number is a prime number?

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11

No.

11# - 1 = 2309 and 11# + 1 = 2311, both of which are prime.

p7# - 1 = 510509 and p7# + 1 = 510511, neither of which is prime.

An odd number minus an odd number is an even number.

Related questions

11

6. 11-5

It is: 97 minus 11 = 86

No.

11# - 1 = 2309 and 11# + 1 = 2311, both of which are prime.

p7# - 1 = 510509 and p7# + 1 = 510511, neither of which is prime.

While 230402457 - 1 was the largest known prime when it was discovered, there really is no 'largest' prime number. It can be proven that the set of prime numbers is infinite, so we will never be able to label one as the largest.

Yes or no. 2 to the 67 power minus 1 is 147,573,952,589,676,412,927. 761,838,257,287 x 193,707,721 ____________ 147,573,952,589,676,412,927. Therefore 2 to the 67th power minus 1 is not a prime number. This is according to mathematician Frank Nelson Cole.

"IT IS ALWAYS A ODD"

A plus number.

An odd number minus an odd number is an even number.

Sales minus Prime cost = Prime Margines. Direct material and direct labor are often referred to as prime cost.