1,315,450

2 × 5² × 26309

Starting at 1,315,450, the Collatz iteration reaches 1 after 80 steps. The first transition is 657725; the starting value is even with 12 positive divisors.

Prime Factor Structure

Factorization String 2 × 5^2 × 26309

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 2,446,830

Proper Divisor Sum 1,131,380

Digit Sum / Digital Root 19 (Root: 1)

Adjacent Primes #1315441 ← → #1315451

Radix Representation

Decimal	1315450
Binary	101000001001001111010 (21 bits)
Octal	0o5011172
Hexadecimal	0x14127A

Divisor Catalog (12)

1 2 5 10 25 50 26,309 52,618 131,545 263,090 657,725 1,315,450

Collatz Trajectory (80 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

1,315,450 657,725 1,973,176 986,588 493,294 246,647 739,942 369,971 1,109,914 554,957 1,664,872 832,436 416,218 208,109 624,328 312,164 156,082 78,041 234,124 117,062 58,531 175,594 87,797 263,392 131,696 65,848 32,924 16,462 8,231 24,694 12,347 37,042 18,521 55,564 27,782 13,891 41,674 20,837 62,512 31,256 15,628 7,814 3,907 11,722 5,861 17,584 8,792 4,396 2,198 1,099 3,298 1,649 4,948 2,474 1,237 3,712 1,856 928 464 232

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