λ
Sequence Observatory

1,245,782

2 × 29 × 47 × 457
Deficient Even Composite

Starting at 1,245,782, the Collatz iteration reaches 1 after 248 steps. The first transition is 622891; the starting value is even with 16 positive divisors.

Prime Factor Structure

Factorization String 2 × 29 × 47 × 457
Distinct Prime Factors 4
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 16
Divisor Sum (σ) 1,978,560
Proper Divisor Sum 732,778
Digit Sum / Digital Root 29 (Root: 2)
Adjacent Primes #1245781 ← → #1245791

Radix Representation

Decimal 1245782
Binary 100110000001001010110 (21 bits)
Octal 0o4601126
Hexadecimal 0x130256

Divisor Catalog (16)

1 2 29 47 58 94 457 914 1,363 2,726 13,253 21,479 26,506 42,958 622,891 1,245,782

Collatz Trajectory (248 steps to reach 1)

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

1,245,782 622,891 1,868,674 934,337 2,803,012 1,401,506 700,753 2,102,260 1,051,130 525,565 1,576,696 788,348 394,174 197,087 591,262 295,631 886,894 443,447 1,330,342 665,171 1,995,514 997,757 2,993,272 1,496,636 748,318 374,159 1,122,478 561,239 1,683,718 841,859 2,525,578 1,262,789 3,788,368 1,894,184 947,092 473,546 236,773 710,320 355,160 177,580 88,790 44,395 133,186 66,593 199,780 99,890 49,945 149,836 74,918 37,459 112,378 56,189 168,568 84,284 42,142 21,071 63,214 31,607 94,822 47,411

More profiles

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