Among other things, 2,026 belongs to the group of almost prime numbers because it only has 1, 2, 1,013, and 2,026 as divisors—narrowly missing the chance to be a prime number. It can also be used to generate a prime number. It’s part of a sequence that collects prime numbers of the form 50…077 . Thus, 577, 5077, 50077 and 5000077 are prime numbers. A prime number in this sequence is 5 × 102026 + 77—that is, 5 followed by 2,026 zeros plus 77.