1,988,130

2 × 3 × 5 × 66271

Starting at 1,988,130, the Collatz iteration reaches 1 after 153 steps. The first transition is 994065; the starting value is even with 16 positive divisors.

Prime Factor Structure

Factorization String 2 × 3 × 5 × 66271

Distinct Prime Factors 4

Square Status No

Abundance Measure Abundant

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 4,771,584

Proper Divisor Sum 2,783,454

Digit Sum / Digital Root 30 (Root: 3)

Adjacent Primes #1988113 ← → #1988137

Radix Representation

Decimal	1988130
Binary	111100101011000100010 (21 bits)
Octal	0o7453042
Hexadecimal	0x1E5622

Divisor Catalog (16)

1 2 3 5 6 10 15 30 66,271 132,542 198,813 331,355 397,626 662,710 994,065 1,988,130

Collatz Trajectory (153 steps to reach 1)

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

1,988,130 994,065 2,982,196 1,491,098 745,549 2,236,648 1,118,324 559,162 279,581 838,744 419,372 209,686 104,843 314,530 157,265 471,796 235,898 117,949 353,848 176,924 88,462 44,231 132,694 66,347 199,042 99,521 298,564 149,282 74,641 223,924 111,962 55,981 167,944 83,972 41,986 20,993 62,980 31,490 15,745 47,236 23,618 11,809 35,428 17,714 8,857 26,572 13,286 6,643 19,930 9,965 29,896 14,948 7,474 3,737 11,212 5,606 2,803 8,410 4,205 12,616

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