λ
Sequence Observatory

1,320,342

2 × 3 × 220057
Abundant Even Composite

Starting at 1,320,342, the Collatz iteration reaches 1 after 124 steps. The first transition is 660171; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2 × 3 × 220057
Distinct Prime Factors 3
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 2,640,696
Proper Divisor Sum 1,320,354
Digit Sum / Digital Root 15 (Root: 6)
Adjacent Primes #1320337 ← → #1320343

Radix Representation

Decimal 1320342
Binary 101000010010110010110 (21 bits)
Octal 0o5022626
Hexadecimal 0x142596

Divisor Catalog (8)

1 2 3 6 220,057 440,114 660,171 1,320,342

Collatz Trajectory (124 steps to reach 1)

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

1,320,342 660,171 1,980,514 990,257 2,970,772 1,485,386 742,693 2,228,080 1,114,040 557,020 278,510 139,255 417,766 208,883 626,650 313,325 939,976 469,988 234,994 117,497 352,492 176,246 88,123 264,370 132,185 396,556 198,278 99,139 297,418 148,709 446,128 223,064 111,532 55,766 27,883 83,650 41,825 125,476 62,738 31,369 94,108 47,054 23,527 70,582 35,291 105,874 52,937 158,812 79,406 39,703 119,110 59,555 178,666 89,333 268,000 134,000 67,000 33,500 16,750 8,375

More profiles

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