Sixty one is the sum of two primes in two different ways,
1) 7 + 61
2) 31 + 37
The squares of the digits in 68 makes a perfect square 100.
68 => 62+82 = 100
The square root of 68 is 8.246
Sixty one is the sum of two primes in two different ways,
1) 7 + 61
2) 31 + 37
The squares of the digits in 68 makes a perfect square 100.
68 => 62+82 = 100
The square root of 68 is 8.246
The nearest previous perfect square is 64 and the nearest next perfect square is 81 .
